Grammar and ordinary language are bad guides to metaphysics.... - Bertrand Russell

"We know very little, and yet it is astonishing that we know so much, and still more astonishing that so little knowledge can give us so much power."

"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."

"Science is what you know, philosophy is what you don't know"

"Remember your humanity, and forget the rest."

"Those who have never known the deep intimacy and the intense companionship of mutual love have missed the best thing that life has to give."