“Men are wise in proportion, not to their experience, but to their capacity for experience. If we could learn from mere experience, the stones of London would be wiser than its wisest men.”

Nur der Dumme lernt aus Erfahrung, der Kluge aus der Erfahrung der anderen!
Alan Turing

Speech at Mâcon (1847)

Book V, Chapter 1.
Books, Coningsby (1844), Vivian Grey (1826)

Source: The Politics of Experience (1967), Ch. 1 : Experience as evidence
Context: I cannot experience your experience. You cannot experience my experience. We are both invisible men. All men are invisible to one another. Experience used to be called The Soul. Experience as invisibility of man to man is at the same time more evident than anything. Only experience is evident. Experience is the only evidence. Psychology is the logos of experience. Psychology is the structure of the evidence, and hence psychology is the science of sciences.

Source: A Princess of Mars (1917), Chapter 5

Filburn v. People's Palace and Aquarium Co. (1890), L. R. 25 Q. B. 261.

Source: Leadership Gold: Lessons I've Learned from a Lifetime of Leading