His work was praised by New Left historian William Appleman Williams , libertarian theorist Murray Rothbard , and others .
He was also an egoist influenced by Max Stirner and rejected the natural rights views held by some other libertarians .
egoist 's work was praised by New Left historian William Appleman Williams , libertarian theorist Murray Rothbard , and others .
He was also an egoist influenced by Max Stirner and rejected the natural rights views held by some other libertarians .