I intend to leave after my death a large fund for the promotion of the peace idea, but I am skeptical as to its results.

The first time I saw nitroglycerine was in the beginning of the Crimean War. Professor Zinin in St. Petersburg exhibited some to my father and me, and struck some on an anvil to show that only the part touched by the hammer exploded without spreading.

Second to agriculture, humbug is the biggest industry of our age.

Contentment is the only real wealth.

If I have a thousand ideas and only one turns out to be good, I am satisfied.

The truthful man is usually a liar.