We have no more right to consume happiness without producing it than to consume wealth without producing it.

Those who can’t change their minds can’t change anything.

What use are cartridges in battle? I always carry chocolate instead.

No community has ever yet passed beyond the initial phases in which its pugnacity and fanaticism enabled it to found a nation, and its cupidity to establish and develop a commercial civilization.

Reasonable men adapt themselves to their environment; unreasonable men try to adapt their environment to themselves. Thus all progress is the result of the efforts of unreasonable men.

My reputation grows with every failure.

If more than ten percent of the public likes a painting, it should be burned.