Science is organized knowledge. Wisdom is organized life.

Law And Freedom without Violence (Anarchy) Law And Violence without Freedom (Despotism) Violence without Freedom And Law (Barbarism) Violence with Freedom And Law (Republic)

The desire which a man has for a woman is not directed towards her because she is a human being, but because she is a woman ; that she is a human being is of no concern to the man; only her sex is the object of his desires.

Space and time are the framework within which the mind is constrained to construct its experience of reality.

It is not God's will merely that we should be happy, but that we should make ourselves happy

The instruction of children should aim gradually to combine knowing and doing. Among all sciences mathematics seems to be the only one of a kind to satisfy this aim most completely.

Experience without theory is blind, but theory without experience is mere intellectual play.