“May you live every day of your life.”

“We have just enough religion to make us hate, but not enough to make us love one another.”

“He asked me, "what were the usual causes or motives that made one country go to war with another?" I answered "they were innumerable; but I should only mention a few of the chief. Sometimes the amb...”

“It is useless to attempt to reason a man out of a thing he was never reasoned into.”

“And he gave it for his opinion, "that whoever could make two ears of corn, or two blades of grass, to grow upon a spot of ground where only one grew before, would deserve better of mankind, and do ...”

“He likewise directed, that every senator in the great council of a nation, after he had delivered his opinion, and argued in the defence of it, should be obliged to give his vote directly contrary;...”

“[T]he scripture worshippers put the writings ahead of God. Instead of interpreting God's actions in nature, for example, they interpret nature in the light of the Scripture. Nature says the rock is...”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”