War will disappear only when men shall take no part whatever in violence and shall be ready to suffer every persecution that their abstention will bring them. It is the only way to abolish war.

Do not try to satisfy your vanity by teaching a great many things. Awaken people's curiosity. It is enough to open minds; do not overload them. Put there just a spark. If there is some good inflammable stuff, it will catch fire.

Man is a rational animal. He can think up a reason for anything he wants to believe.

A person is never happy except at the price of some ignorance. [The ability to focus on positives and distract your mind from negatives for at least a time is a necessary skill for being happy.]

We have drugs to make women speak, but none to keep them silent.

It's not by amusing oneself that one learns.

To imagine is everything, to know is nothing at all.