“For many decades,” Toobin wrote, “there have been moderate Republicans on the Court — John M. Harlan II and Potter Stewart (appointed by Eisenhower), Lewis F. Powell and Harry Blackmun (Nixon), David H. Souter (Bush I). Stevens is the last of them, and his departure will mark a cultural milestone. The moderate-Republican tradition that he came out of ‘goes way back,’ Stevens said. ‘But things have changed.’”