Byron White, Brady v. United States (397 U.S. 742…
“ That a guilty plea is a grave and solemn act to be accepted only with care and discernment has long been recognized. Central to the plea and the foundation for entering judgment against the defendant is the defendant's admission in open court that he committed the acts charged in the indictment. He thus stands as a witness against himself and he is shielded by the Fifth Amendment from being compelled to do so-hence the minimum requirement that his plea be the voluntary expression of his own choice. ”
