There is no such source of error as the pursuit of absolute truth.

Men of Science. If they are worthy of the name they are indeed about God's path and about his bed and spying out all his ways.

He was born stupid, and greatly increased his birthright.

Flying. Whatever any other organism has been able to do man should surely be able to do also, though he may go a different way about it.

Adversity, if a man is set down to it by degrees, is more supportable with equanimity by most people than any great prosperity arrived at in a single lifetime.

They say the test of [literary power] is whether a man can write an inscription. I say, "Can he name a kitten?" And by this test I am condemned, for I cannot.

There is no permanent absolute unchangeable truth; what we should pursue is the most convenient arrangement of our ideas.