Alfred North Whitehead (15 February 1861 – 30 December 1947) was an English mathematician and philosopher. He created the philosophical school known as process philosophy, which has been applied in a wide variety of disciplines, including ecology, theology, education, physics, biology, economics, and psychology.
The deepest definition of youth is life as yet untouched by tragedy.
Man is ready to die for an idea, provided that idea is not quite clear to him.