“The vitality of thought is in adventure. Ideas won't keep. Something must be done about them.”
Source: Attributed from posthumous publications, Dialogues of Alfred North Whitehead (1954), p. 100; Ch. 12, April 28, 1938.
Context: The vitality of thought is in adventure. Ideas won't keep. Something must be done about them. When the idea is new, its custodians have fervor, live for it, and, if need be, die for it.