Me. Justice Stewart
delivered the opinion of the Court.
In evident conflict with the present view of every other court that has considered the issue, the North Carolina Supreme Court has held that Miranda v. Arizona, 384 U. S. 436, requires that no statement of a person under custodial interrogation may be admitted in evidence against him unless, at the time the statement was made, he explicitly waived the right to the presence of a lawyer. We granted certiorari to consider whether this per se rule reflects a proper understanding of the Miranda decision. 439 U. S. 1046.
The respondent was convicted in a North Carolina trial court of kidnaping, armed robbery, and felonious assault. The evidence at his trial showed that he and a man named Elmer Lee had robbed a gas station in Goldsboro, N. C., in December 1976, and had shot the station attendant as he was attempting to escape. The attendant was paralyzed, but survived to testify against the respondent.
The prosecution also produced evidence of incriminating statements made by the respondent shortly after his arrest by Federal Bureau of Investigation agents in the Bronx, N. Y., on the basis of a North Carolina fugitive warrant. Outside the presence of the jury, FBI Agent Martinez testified that at the time of the arrest he fully advised the respondent of the rights delineated in the Miranda case. According to the uncontroverted testimony of Martinez, the agents then took the respondent to the FBI office in nearby New Rochelle, N. Y. There, after the agents determined that the respondent had an 11th grade education and was literate, he was given the Bureau’s “Advice of Rights” form which he read. When asked if he understood his rights, he replied that he did. The respondent refused to sign the waiver at the bottom of the form. He was told that he need neither speak nor sign the form, but that the agents would like him to talk to them. The respondent replied: “I will talk to you but I am not signing any form.” He then made inculpatory statements. Agent Martinez testified that the respondent said nothing when advised of his right to the assistance of a lawyer. At no time did the respondent request counsel or attempt to terminate the agents’ questioning.
At the conclusion of this testimony the respondent moved to suppress the evidence of his incriminating statements on the ground that he had not waived his right to the assistance of counsel at the time the statements were made. The court denied the motion, finding that
“the statement made by the defendant, William Thomas Butler, to Agent David C. Martinez, was made freely and voluntarily to said agent after having been advised of his rights as required by the Miranda ruling, including his right to an attorney being present at the time of the inquiry and that the defendant, Butler, understood his rights; [and] that he effectively waived his rights, including the right to have an attorney present during the questioning by his indication that he was willing to answer questions, having read the rights form together with the Waiver of Rights . . . App. A-22 to A-23.
The respondent’s statements were then admitted into evidence, and the jury ultimately found the respondent guilty of each offense charged.
On appeal, the North Carolina Supreme Court reversed the convictions and ordered a new trial. It found that the statements had been admitted in violation of the requirements of the Miranda decision, noting that the respondent had refused to waive in writing his right to have counsel present and that there had not been a specific oral waiver. As it had in at least two earlier cases, the court read the Miranda opinion as
“provid [ing] in plain language that waiver of the right to counsel during interrogation will not be recognized unless such waiver is 'specifically made’ after the Miranda warnings have been given.” 295 N. C. 250, 255, 244 S. E. 2d 410, 413 (1978).
See State v. Blackmon, 280 N. C. 42, 49-50, 185 S. E. 2d 123, 127-128 (1971); State v. Thacker, 281 N. C. 447, 453-454, 189 S. E. 2d 145, 149-150 (1972).
We conclude that the North Carolina Supreme Court erred in its reading of the Miranda opinion. There, this Court said:
“If the interrogation continues without the presence of an attorney and a statement is taken, a heavy burden rests on the government to demonstrate that the defendant knowingly and intelligently waived his privilege against self-incrimination and his right to retained or appointed counsel.” 384 U. S., at 475.
The Court’s opinion went on to say:
“An express statement that the individual is willing to make a statement and does not want an attorney followed closely by a statement could constitute a waiver. But a valid waiver will not be presumed simply from the silence of the accused after warnings are given or simply from the fact that a confession was in fact eventually obtained.” Ibid.
Thus, the Court held that an express statement can constitute a waiver, and that silence alone after such warnings cannot do so. But the Court did not hold that such an express statement is indispensable to a finding of waiver.
An express written or oral statement of waiver of the right to remain silent or of the right to counsel is usually strong proof of the validity of that waiver, but is not inevitably either necessary or sufficient to establish waiver. The question is not one of form, but rather whether the defendant in fact knowingly and voluntarily waived the rights delineated in the Miranda case. As was unequivocally said in Miranda, mere silence is not enough. That does not mean that the defendant’s silence, coupled with an understanding of his rights and a course of conduct indicating waiver, may never support a conclusion that a defendant has waived his rights. The courts must presume that a defendant did not waive his rights; the prosecution’s burden is great; but in at least some cases waiver can be clearly inferred from the actions and words of the person interrogated.
The Court’s opinion in Miranda explained the reasons for the prophylactic rules it created:
“We have concluded that without proper safeguards the process of in-custody interrogation of persons suspected or accused of crime contains inherently compelling pressures which work to undermine the individual’s will to resist and to compel him to speak where he would not otherwise do so freely. In order to combat these pressures and to permit a full opportunity to exercise the privilege against self-incrimination, the accused must be adequately and effectively apprised of his rights and the exercise of those rights must be fully honored.” Id., at 467.
The per se rule that the North Carolina Supreme Court has found in Miranda does not speak to these concerns. There is no doubt that this respondent was adequately and effectively apprised of his rights. The only question is whether he waived the exercise of one of those rights, the right to the presence of a lawyer. Neither the state court nor the respondent has offered any reason why there must be a negative answer to that question in the absence of an express waiver. This is not the first criminal case to question whether a defendant waived his constitutional rights. It is an issue with which courts must repeatedly deal. Even when a right scr fundamental as that to counsel at trial is involved, the question of waiver must be determined on “the particular facts and circumstances surrounding that case, including the background, experience, and conduct of the accused.” Johnson v. Zerbst, 304 U. S. 458, 464. See also United States v. Washington, 431 U. S. 181, 188; Schneckloth v. Bustamonte, 412 U. S. 218; Frazier v. Cupp, 394 U. S. 731, 739.
We see no reason to discard that standard and replace it with an inflexible per se rule in a case such as this. As stated at the outset of this opinion, it appears that every court that has considered this question has now reached the same conclusion. Ten of the eleven United States Courts of Appeals and the courts of at least 17 States have held that an explicit statement of waiver is not invariably necessary to support a finding that the defendant waived the right to remain silent or the right to counsel guaranteed by the Miranda case. By creating an inflexible rule that no implicit waiver can ever suffice, the North Carolina Supreme Court has gone beyond the requirements of federal organic law. It follows that its judgment cannot stand, since a state court can neither add to nor subtract from the mandates of the United States Constitution. Oregon v. Hass, 420 U. S. 714.
Accordingly, the judgment is vacated, and the case is remanded to the North Carolina Supreme Court for further proceedings not inconsistent with this opinion.
It is so ordered.
Mr. Justice Powell took no part in the consideration or decision of this case.
The parties disagree over whether the respondent was also orally advised of his Miranda rights at the New Rochelle office. There is no dispute that he was given those warnings orally at the scene of the arrest, or that he read the “Advice of Rights” form in the New Rochelle office. This factual controversy, therefore, is not relevant to the basic issue in this case.
The dissenting opinion points out, post, at 378, that at oral argument the respondent’s counsel disputed the fact that the respondent is literate. But the trial court specifically found that “it had been . . . determined by Agent Martinez that the defendant has an Eleventh Grade Education and that he could read and write . . . .” App. A-21. This finding, based upon uncontroverted evidence, is binding on this Court.
The respondent admitted to the agents that he and Lee had been drinking heavily on' the day of the robbery. He acknowledged that they had decided to rob a gas station, but denied that he had actually participated in the robbery. His friend, he said, had shot the attendant.
But see State v. Siler, 292 N. C. 543, 550, 234 S. E. 2d 733, 738 (1977). In that case, the North Carolina Supreme Court adhered to the interpretation of Miranda it first expressed in Blackmon, but acknowledged that it might find waiver without an express written or oral statement if the defendant’s subsequent comments revealed that his earlier silence had been meant as a waiver. Although Siler was cited by the State Supreme Court in the present case, that portion of the Siler opinion was not discussed.
We do not today even remotely question the holding in Carnley v. Cochran, 369 U. S. 506, which was specificaEy approved in the Miranda opinion, 384 U. S., at 475. In that case, decided before Gideon v. Wainwright, 372 U. S. 335, the Court held that the defendant had a constitutional right to counsel under the Fourteenth Amendment. The Florida Supreme Court had presumed that his right had been waived because there was no evidence in the record that he had requested counsel. The Court refused to allow a presumption of waiver from a silent record. It said: “The record must show, or there must be an allegation and evidence which show, that an accused was offered counsel but intelligently and understandingly rejected the offer.” 369 U. S., at 516. This statement is consistent with our decision today, which is merely that a court may find an intelligent and understanding rejection of counsel in situations where the defendant did not expressly state as much.
United States v. Speaks, 453 F. 2d 966 (CA1 1972); United States v. Boston, 508. F. 2d 1171 (CA2 1974); United States v. Stuckey, 441 F. 2d 1104 (CA3 1971); Blackmon v. Blackledge, 541 F. 2d 1070 (CA4 1976); United States v. Hayes, 385 F. 2d 375 (CA4 1967); United States v. Cavallino, 498 F. 2d 1200 (CA5 1974); United States v. Montos, 421 F. 2d 215 (CA5 1970); United States v. Ganter, 436 F. 2d 364 (CA7 1970); United States v. Marchildon, 519 F. 2d 337 (CA8 1975); Hughes v. Swenson, 452 F. 2d 866 (CA8 1971); United States v. Moreno-Lopez, 466 F. 2d 1205 (CA9 1972); United States v. Hilliker, 436 F. 2d 101 (CA9 1970); Bond v. United States, 397 F. 2d 162 (CA10 1968) (but see Sullins v. United States, 389 F. 2d 985 (CA10 1968)); United States v. Cooper, 163 U. S. App. D. C. 55, 499 F. 2d 1060 (1974). In Blackmon v. Blackledge, supra, the Court of Appeals for the Fourth Circuit specifically rejected the North Carolina Supreme Court’s inflexible view that only express waivers of Miranda rights can be valid.
The Courts of Appeals have unanimously rejected the similar argument that refusal to sign a written waiver form precludes a finding of waiver. See United States v. Speaks, supra; United States v. Boston, supra; United States v. Stuckey, supra; United States v. Thompson, 417 F. 2d 196 (CA4 1969); United States v. Guzman-Guzman, 488 F. 2d 965 (CA5 1974); United States v. Caulton, 498 F. 2d 412 (CA6 1974); United States v. Crisp, 435 F. 2d 354 (CA7 1970); United States v. Zamarripa, 544 F. 2d 978 (CA8 1976); United States v. Moreno-Lopez, supra; Bond v. United States, supra; and United States v. Cooper, supra.
Sullivan v. State, 351 So. 2d 659 (Ala. Crim. App.), cert. denied, 351 So. 2d 665 (Ala. 1977); State v. Pineda, 110 Ariz. 342, 519 P. 2d 41 (1974); State ex rel. Berger v. Superior Court, 109 Ariz. 506, 513 P. 2d 935 (1973); People v. Johnson, 70 Cal. 2d 541, 450 P. 2d 865 (1969) (reversing lower court on other grounds); People v. Weaver, 179 Colo. 331, 500 P. 2d 980 (1972); Reed v. People, 171 Colo. 421, 467 P. 2d 809 (1970); State v. Craig, 237 So. 2d 737 (Fla. 1970); Peek v. State, 239 Ga. 422, 238 S. E. 2d 12 (1977); People v. Brooks, 51 Ill. 2d 156, 281 N. E. 2d 326 (1972); State v. Wilson, 215 Kan. 28, 523 P. 2d 337 (1974); State v. Hazelton, 330 A. 2d 919 (Me. 1975); Miller v. State, 251 Md. 362, 247 A. 2d 530 (1968); Commonwealth v. Murray, 359 Mass. 541, 269 N. E. 2d 641 (1971); State v. Alewine, 474 S. W. 2d 848 (Mo. 1971); Burnside v. State, 473 S. W. 2d 697 (Mo. 1971); Shirey v. State, 520 P. 2d 701 (Okla. Crim. App. 1974); State v. Davidson, 252 Ore. 617, 451 P. 2d 481 (1969); Commonwealth v. Garnett, 458 Pa. 4, 326 A. 2d 335 (1974); Bowling v. State, 458 S. W. 2d 639 (Tenn. Crim. App. 1970); State v. Young, 89 Wash. 2d 613, 574 P. 2d 1171 (1978). See also Aaron v. State, 275 A. 2d 791 (Del. 1971); State v. Nelson, 257 N. W. 2d 356 (Minn. 1977); Land v. Commonwealth, 211 Va. 223, 176 S. E. 2d 586 (1970) (reversing lower court on other grounds).
By the same token this Court must accept whatever construction of a state constitution is placed upon it by the highest court of the State.