William J. Brennan, Jr., Moore v. Michigan — Opinion of the Court
“ Moreover, the proceedings to determine the degree of murder, the outcome of which determined the extent of punishment, introduced their own complexities. With the aid of counsel, the petitioner, who, as we have said, neither testified himself in the proceeding nor cross-examined the prosecution's witnesses, might have done much to establish a lesser degree of the substantive crime, or to establish facts and make arguments which would have mitigated the sentence. The right to counsel is not a right confined to representation during the trial on the merits. ”
