After doing so many different roles, if you don't stretch yourself, there's no excitement left.
“I mean people have compared us to like the Grateful Dead and all these like psychedelic sixties bands.”
“In 1960 I published a book that attempted to direct attention to the possibility of a thermonuclear war, to ways of reducing the likelihood of such a war, and to methods for coping with the consequences should war occur despite our efforts to avoid it.”