Thinking is one thing no one has ever been able to tax.

Every time you tear a leaf off a calendar, you present a new place for new ideas and progress.

—Charles Kettering

One fails forward toward success.

—Charles Kettering

Believe and act as if it were impossible to fail.

—Charles Kettering

High achievement always takes place in the framework of high expectation.

—Charles Kettering

If you want to kill any idea in the world, get a committee working on it.

—Charles Kettering

At times I think and at times I am.

—Paul Valéry

Ours is the age that is proud of machines that think and suspicious of men who try to.

—H. Mumford Jones

What a man takes in by contemplation, that he pours out in love.

—Meister Eckhart

If you have a gun, you can go out and shoot one, two, three, five people. But if you have an ideology and stick to it, thinking it is the absolute truth, you can kill millions.

—Thích Nhất Hạnh

Brain: an apparatus with which we think we think.

—Ambrose Bierce