“The cosmological constant,” Turner liked to say, “is the last refuge of scoundrel cosmologists, beginning with Einstein.” He himself, in his “heart of hearts,” thought the cosmological constant must be zero. But he also knew that the cosmological constant had “every right to be there.” And as he and Rocky Kolb often insisted, their generation wasn’t going to make the mistake that Einstein and other twentieth-century cosmologists had made by not taking every remotely serious option seriously.
