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.

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Whitehead's political views sometimes appear to be libertarian without the label. He believed that "there are no whole truths; all truths are half-truths. 1925a.

Alfred North Whitehead OM FRS (15 February 1861 – 30 December 1947) was an English-American mathematician and philosopher. He co-authored the epochal Principia Mathematica with Russell and later wrote the metaphysical treatise Process and Reality.