“People have finally realized that human knowledge can never grow unless all opinions are respected. it’s the only way for them to interact in a crucial environment for new ideas to be born”

A Voice from the Attic (1960)
Context: The climate of his mind is so salubrious, so invigorating, that dull thoughts and heavy cares are dispelled by contact with it.
And is not this the true end of scholarship? It is to make us wise, of course, but what is the use of being wise if we are not sometimes merry? The merriment of wise men is not the uninformed, gross fun of ignorant men, but it has more kinship with that than the pinched, frightened fun of those who are neither learned nor ignorant, gentle nor simple, bound nor free. The idea that a wise man must be solemn is bred and preserved among people who have no idea what wisdom is, and can only respect whatever makes them feel inferior.

Truth consists in nothing other than man's revelation of himself, and thereto belongs the discovery of himself, the liberation from all that is alien, the uttermost abstraction or release from all authority, the re-won naturalness. Such thoroughly true men are not supplied by school; if they are there, they are there in spite of school.
Source: The False Principle of our Education (1842), p. 21

This I Believe (1951)

Introduction
The Grammar of Science (1900)

Source: The Broken God (1992), p. 481

1950s, Address at the Philadelphia Convention Hall (1956)

Procunier v. Martinez, 416 U.S. 396 (1974) (Concurring opinion).

Interview with Salwa Bugaighis, 2012