It was wonderful to find America, but it would have been more wonderful to miss it.

The slowness of one section of the world about adopting the valuable ideas of another section of it is a curious thing and unaccountable.

Loyalty is a word which has worked vast harm; for it has been made to trick men into being "loyal" to a thousand iniquities, whereas the true loyalty should have been to themselves - in which case there would have ensured a rebellion, and the throwing off of that deceptive yoke.

When your opinions start to coincide with those of the majority, it is time to reconsider your opinions.

It is not best that we should all think alike; it is a difference of opinion that makes horse races.

A half-educated physician is not valuable. He thinks he can cure everything.

There are several good protections against temptation, but the surest is cowardice.