opinion: Mr. Justice Murphy
  delivered the opinion of the Court.
  This case centers on two issues: (1) whether it was proper for a federal district court to entertain a habeas corpus petition filed by a state prisoner who, having secured a ruling from the highest state court on his federal constitutional claim, had failed to seek a writ of certiorari in this Court; (2) whether the federal district court correctly held that the prisoner had been deprived of his constitutional right to counsel at the trial for a non-capital state offense.
  On February 19, 1945, petitioner Wade was arrested in Palm Beach County, Florida, upon the charge of breaking and entering. He was held in jail until brought to trial before a jury on March 14, 1945, in the Criminal Court of Record of Palm Beach County. Just before the trial started, he asked the trial judge to appoint counsel to represent him, claiming that it was financially impossible to employ one himself. The judge refused the request and the trial proceeded. The jury returned a verdict of guilty on the same day and Wade was immediately sentenced to serve five years in the state penitentiary.
  Wade then obtained the aid of counsel. On March 16, two days after the trial and conviction, this counsel filed a petition for a writ of habeas corpus in the Circuit Court of Palm Beach County. The petition claimed that the refusal of the judge to appoint counsel for Wade at the trial was a denial of the due process of law guaranteed to him by the Fourteenth Amendment to the Constitution of the United States. The writ was issued, a hearing was had, and the Circuit Court thereupon granted the motion of the state’s attorney to quash the writ. This action was taken on the authority of two decisions of the Supreme Court of Florida holding that under Florida law a trial court has no duty to appoint counsel to represent the accused in a non-capital case. Watson v. State, 142 Fla. 218, 194 So. 640; Johnson v. State, 148 Fla. 510, 4 So. 2d 671.
  Wade’s counsel appealed the decision of the Circuit Court to the Supreme Court of Florida. In the latter court, the state’s Attorney General filed a motion to dismiss the appeal as frivolous. Two points were emphasized in this motion: (1) Wade had not appealed from his conviction or even filed a motion for a new trial; (2) the Circuit Court had quashed the habeas corpus writ on the authority of the two cases cited in its order. The Supreme Court, upon consideration of this motion, granted the motion and dismissed the appeal. No written opinion was filed and no indication was given whether the appeal was dismissed for one or both of the reasons advanced by the Attorney General. The date of this action was May 14, 1945. No attempt was made to secure a writ of certiorari from this Court.
  Nearly a year later, on May 8, 1946, a petition for a writ of habeas corpus was filed in the United States District Court for the Southern District of Florida. This petition alleged that the refusal to appoint counsel for Wade at the trial deprived him of his constitutional right to due process of law. And the petition further stated that this point had not been raised by way of appeal from the conviction because of the belief that the Watson and Johnson cases made it plain that the Supreme Court of Florida “has no power of reversal of a conviction because defendants were not represented by counsel, and for that reason failed to obtain a fair trial, except in capital cases, and this case is not a capital case.” Such was the reason given for the belief that an appeal would have been useless and of no avail. But the petition pointed out that in order to exhaust all his remedies in the state courts before applying to a federal court, Wade had pursued a writ of habeas corpus all the way through the Florida courts.
  The District Court granted the writ and a hearing was held on May 17, 1946. Both Wade and the trial judge testified as to the events surrounding the refusal to appoint counsel. After hearing this testimony and the argument of counsel, the District Court concluded that under the circumstances the denial of Wade’s request was contrary to the due process guaranteed by the Fourteenth Amendment, thereby rendering void the judgment and commitment under which Wade was held. But the Fifth Circuit Court of Appeals reversed, holding that the Fourteenth Amendment did not require the appointment of counsel in non-capital state cases unless the state law so required. 158 F. 2d 614.
  We then granted certiorari. After the case had been submitted to us on briefs, we ordered the case restored to the docket for reargument on two points: “(1) the propriety of the exercise of jurisdiction by the District Court in this case when it appears of record, in the state’s motion for dismissal of the appeal on habeas corpus, that petitioner had not availed himself of the remedy of appeal from his conviction, apparently open after trial though now barred by limitation ... (2) whether the failure of Florida to make this objection in this proceeding affects the above problem.”
  In our view, it was proper for the District Court to entertain Wade’s petition for a writ of habeas corpus and to proceed to a determination of the merits of Wade’s constitutional claim. The crucial point is that Wade has exhausted one of the two alternative routes open in the Florida courts for securing an answer to his constitutional objection. It now appears that a defendant who is denied counsel in a non-capital case in Florida may attack the constitutionality of such treatment either by the direct method of an appeal from the conviction or by the collateral method of habeas corpus. Since Wade chose the latter alternative and pursued it through to the Supreme Court of Florida, he has done all that could be done to secure a determination of his claim by the Florida courts. The fact that he might have appealed his conviction and made the same claim and received the same answer does not detract from the completeness with which Florida has disposed of his claim on habeas corpus. The exhaustion of but one of several available alternatives is all that is necessary.
  At the time the Supreme Court of Florida dismissed Wade’s habeas corpus appeal, however, the propriety of the habeas corpus method of raising the right of counsel issue was anything but clear. The failure of that court to specify the reason for the dismissal made it possible to construe the action as a holding that a direct appeal from the conviction was the only remedy available to Wade. The Attorney General’s motion to dismiss the habeas corpus appeal seemed to make that point and the Supreme Court might have adopted it as the sole ground of dismissal. Had that been the situation, the case before us would be in an entirely different posture. Wade would then be in the position of seeking relief in a federal court after having chosen to forego the opportunity to secure recognition of his claim by the exclusive mode designated by Florida.
  But the doubts as to the availability of habeas corpus in Florida for the purpose at hand have been dispelled by the subsequent decision of the Supreme Court of Florida in Johnson v. Mayo, 158 Fla. 264, 28 So. 2d 585. That case was a habeas corpus proceeding in which the Florida court proceeded to pass upon the merits of a claim identical with that raised by Wade. In so doing, the court relied upon the disposition of Wade’s habeas corpus appeal, stating that it had been dismissed as frivolous. As the Johnson case makes clear, Wade’s appeal was considered frivolous because the right to counsel in a non-capital case is counter to the settled law of Florida. Reference was made in the Johnson decision to the contrary decisions in other states and to “the rule in the Federal Courts but we are of the view that those decisions do not control in Florida.” 158 Fla. at 266, 28 So. 2d at 586.
  Thus the Supreme Court of Florida announced unambiguously less than a year and a half after its dismissal of Wade’s appeal that its action had been grounded on the merits of the constitutional issue tendered by Wade, rather than on a holding that a direct appeal was the only way to raise that issue. It is not for us to contradict this construction by the Florida court and to attribute the dismissal of Wade’s appeal to a state ground of procedure which is negatived by both the decision and the reasoning in the later Johnson case.
  The only real problem in this case concerning the propriety of the District Court entertaining Wade’s petition relates to the effect of his failure to seek a writ of certiorari from this Court following the action of the Supreme Court of Florida on his habeas corpus appeal. It has been said that “Ordinarily an application for habeas corpus by one detained under a state court judgment of conviction for crime will be entertained by a federal court only after all state remedies available, including all appellate remedies in the state courts and in this Court by appeal or writ of certiorari, have been exhausted.” Ex parte Hawk, 321 U. S. 114, 116-117. The problem is to reexamine this statement in the light of the facts of this case.
  The requirement that state remedies be exhausted before relief is sought in the federal courts is grounded primarily upon the respect which federal courts have for the state judicial processes and upon the administrative necessities of the federal judiciary. State courts are duty bound to give full effect to federal constitutional rights and it cannot be assumed that they will be derelict in their duty. Only after state remedies have been exhausted without the federal claim having been vindicated may federal courts properly intervene. Indeed, any other rule would visit upon the federal courts an impossible burden, forcing them to supervise the countless state criminal proceedings in which deprivations of federal constitutional rights are alleged.
  But the reasons for this exhaustion principle cease after the highest state court has rendered a decision on the merits of the federal constitutional claim. The state procedure has then ended and there is no longer any danger of a collision between federal and state authority. The problem shifts from the consummation of state remedies to the nature and extent of the federal review of the constitutional issue. The exertion of such review at this point, however, is not in any real sense a part of the state procedure. It is an invocation of federal authority growing out of the supremacy of the Federal Constitution and the necessity of giving effect to that supremacy if the state processes have failed to do so.
  After state procedure has been exhausted, the concern is with the appropriate federal forum in which to pursue further the constitutional claim. The choice lies between applying directly to this Court for review of the constitutional issue by certiorari or instituting an original habeas corpus proceeding in a federal district court. Considerations of prompt and orderly procedure in the federal courts will often dictate that direct review be sought first in this Court. And where a prisoner has neglected to seek that review, such failure may be a relevant consideration for a district court in determining whether to entertain a subsequent habeas corpus petition.
  But the factors which make it desirable to present the constitutional issue directly and initially to this Court do not justify a hard and fast rule to that effect, especially in view of the volume of this Court’s business. Writs of certiorari are matters of grace. Matters relevant to the exercise of our certiorari discretion frequently result in denials of the writ without any consideration of the merits. The constitutional issue may thus have no bearing upon the denial of the writ. Where it is apparent or even possible that such would be the disposition of a petition for certiorari from the state court’s judgment, failure to file a petition should not prejudice the right to file a habeas corpus application in a district court. Good judicial administration is not furthered by insistence on futile procedure.
  Moreover, the flexible nature of the writ of habeas corpus counsels against erecting a rigid procedural rule that has the effect of imposing a new jurisdictional limitation on the writ. Habeas corpus is presently available for use by a district court within its recognized jurisdiction whenever necessary to prevent an unjust and illegal deprivation of human liberty. Cf. Price v. Johnston, 334 U. S. 266, 283. Where the matter is otherwise within the jurisdiction of the district court, it is within the discretion of that court to weigh the failure to seek certiorari against the miscarriage of justice that might result from a failure to grant relief. In short, we refuse to codify the failure to invoke the discretionary certiorari powers of this Court into an absolute denial of the district court’s power to entertain a habeas corpus application. The prevention of undue restraints on liberty is more important than mechanical and unrealistic administration of the federal courts.
  Fear has sometimes been expressed that the exercise of the district court’s power to entertain habeas corpus petitions under these circumstances might give rise to frequent instances of a single federal judge upsetting the judgment of a state court, often the highest court of the state. But to restrict the writ of habeas corpus for such reason is to limit it on the basis of a discredited fear. Experience has demonstrated that district court judges have used this power sparingly and that only in a negligible number of instances have convictions sustained by state courts been reversed. Statistics compiled by the Administrative Office of the United States Courts show that during the fiscal years of 1943, 1944 and 1945 there was an average of 451 habeas corpus petitions filed each year in federal district courts by prisoners serving state court sentences; of these petitions, an average of but 6 per year resulted in a reversal of the conviction and a release of the prisoner. The releases thus constituted only 1.3% of the total petitions filed. In light of such figures, it cannot be said that federal judges have lightly exercised their power to release prisoners held under the authority of a state. See Ex parte Royall, 117 U. S. 241, 253.
  In the instant case, we believe that it was well within the discretion of the District Court to consider Wade’s petition for a writ of habeas corpus. The Florida courts had given a full and conclusive answer to his claim that he had been denied his constitutional right to counsel. No other remedies were available in Florida. True, he did not seek certiorari following the dismissal of his habeas corpus appeal by the Supreme Court of Florida. But at the time of that dismissal, it was extremely doubtful, to say the least, whether the constitutional issue had really been decided. That doubt was such as to make it reasonably certain that this Court would have denied certiorari on the theory that an adequate state ground appeared to underlie the judgment. His failure to make this futile attempt to secure certiorari accordingly should not prejudice his subsequent petition for habeas corpus in the District Court. Otherwise he would be left completely remediless, having been unable to secure relief. from the Florida courts and being barred from invoking the aid of the federal courts.
  As to the merits of Wade’s constitutional claim, the District Court made the following findings after a hearing at which Wade and the trial judge gave testimony:
  “The Court has heard the evidence of the respective parties and the argument of their counsel. It appears that petitioner, at the time of his trial in the Criminal Court of Record of Palm Beach, Florida, was eighteen years old, and though not wholly a stranger to the Court Room, having been convicted of prior offenses, was still an inexperienced youth unfamiliar with Court procedure, and not capable of adequately representing himself. It is admitted by the Judge who presided at petitioner’s trial on March 6, 1945 that petitioner in open Court, before trial commenced, requested said Judge to appoint counsel for him, but the request was denied and petitioner placed on trial without counsel. . . . The denial of petitioner’s request in the circumstances here involved constitutes a denial of due process, contrary to the 14th Amendment of the Federal Constitution, which renders void the judgment and commitment under which petitioner is held. . . .”
  As the Circuit Court of Appeals pointed out, the evidence at the hearing before the District Court further showed that during the progress of the trial Wade (a) was advised by the trial judge of his right to challenge jurors and excuse as many as six without reason, a right which he did not exercise; (b) was afforded an opportunity, which he accepted, to cross-examine state witnesses; (c) took the stand and testified in his own behalf; and (d) was offered the privilege of arguing his case to the jury but declined, as did the prosecuting attorney.
  We are not disposed to disagree with the findings and conclusion of the District Court. Its determination was a purely factual one to the effect that Wade was an inexperienced youth incapable of adequately representing himself even in a trial which apparently involved no complicated legal questions. This is a judgment which is peculiarly within the province of the trier of facts, based upon personal observation of Wade. And we do not find that the District Court’s determination was clearly erroneous.
  There are some individuals who, by reason of age, ignorance or mental capacity, are incapable of representing themselves adequately in a prosecution of a relatively simple nature. This incapacity is purely personal and can be determined only by an examination and observation of the individual. Where such incapacity is present, the refusál to appoint counsel is a denial of due process of law under the Fourteenth Amendment.
  The Circuit Court of Appeals was therefore in error in reversing the District Court’s judgment. It was also in error in assuming that the failure to appoint counsel in a non-capital case in a state court is a denial of due process under the Fourteenth Amendment only if the law of the state requires such an appointment. To the extent that there is a constitutional right to counsel in this type of case it stems directly from the Fourteenth Amendment and not from state statutes. Betts v. Brady, 316 U. S. 455, 473.
  Reversed.
choices: comity: civil rights comity: criminal procedure comity: First Amendment comity: habeas corpus comity: military comity: obscenity comity: privacy comity: miscellaneous comity primarily removal cases, civil procedure (cf. comity, criminal and First Amendment); deference to foreign judicial tribunals assessment of costs or damages: as part of a court order Federal Rules of Civil Procedure including Supreme Court Rules, application of the Federal Rules of Evidence, Federal Rules of Appellate Procedure in civil litigation, Circuit Court Rules, and state rules and admiralty rules judicial review of administrative agency's or administrative official's actions and procedures mootness (cf. standing to sue: live dispute) venue no merits: writ improvidently granted no merits: dismissed or affirmed for want of a substantial or properly presented federal question, or a nonsuit no merits: dismissed or affirmed for want of jurisdiction (cf. judicial administration: Supreme Court jurisdiction or authority on appeal from federal district courts or courts of appeals) no merits: adequate non-federal grounds for decision no merits: remand to determine basis of state or federal court decision (cf. judicial administration: state law) no merits: miscellaneous standing to sue: adversary parties standing to sue: direct injury standing to sue: legal injury standing to sue: personal injury standing to sue: justiciable question standing to sue: live dispute standing to sue: parens patriae standing standing to sue: statutory standing standing to sue: private or implied cause of action standing to sue: taxpayer's suit standing to sue: miscellaneous judicial administration: jurisdiction or authority of federal district courts or territorial courts judicial administration: jurisdiction or authority of federal courts of appeals judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from federal district courts or courts of appeals (cf. 753) judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from highest state court judicial administration: jurisdiction or authority of the Court of Claims judicial administration: Supreme Court's original jurisdiction judicial administration: review of non-final order judicial administration: change in state law (cf. no merits: remand to determine basis of state court decision) judicial administration: federal question (cf. no merits: dismissed for want of a substantial or properly presented federal question) judicial administration: ancillary or pendent jurisdiction judicial administration: extraordinary relief (e.g., mandamus, injunction) judicial administration: certification (cf. objection to reason for denial of certiorari or appeal) judicial administration: resolution of circuit conflict, or conflict between or among other courts judicial administration: objection to reason for denial of certiorari or appeal judicial administration: collateral estoppel or res judicata judicial administration: interpleader judicial administration: untimely filing judicial administration: Act of State doctrine judicial administration: miscellaneous Supreme Court's certiorari, writ of error, or appeals jurisdiction miscellaneous judicial power, especially diversity jurisdiction