“There is, though I do not know how there is or why there is, a sense of infinite peace and protection in the glittering hosts of heaven.”

“My days I devote to reading and experiments in chemistry, and I spend many of the clear nights in the study of astronomy. There is, though I do not know how there is or why there is, a sense of infinite peace and protection in the glittering hosts of heaven. There it must be, I think, in the vast and eternal laws of matter, and not in the daily cares and sins and troubles of men, that whatever is more than animal within us must find its solace and its hope.”

“Keep on hoping for peace, my son...even though the heaven is still at war.”

“I do not know how to teach philosophy without becoming a disturber of the peace.”

“Diversification is protection against ignorance. It makes little sense if you know what you are doing.”

“Intuition is a sense of knowing how to act spontaneously, without needing to know why.”