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In a rational society we would want our presidents to be teachers. – In our actual society we insist they be cheerleaders.

— Steve Allen, Actor

What could an entirely rational being speak of with another entirely rational being?

— Emmanuel Levinas, French philosopher

The deepest sin against the human mind is to believe things without evidence.

— Thomas Hexley, English Biologist

Every cause produces more than one effect.

— Herbert Spencer, English Philosopher

Everyone you meet always asks if you have a career, are married, or own a house as if life was some kind of grocery list. But no one ever asks you if you are happy.

— Heath Ledger, Actor

What counts now are the value-less facts, the material and the rational. All else is regarded with condescension as being of only sentimental value.

— Jean Gebser, Swiss Philosopher

The whole of science is nothing more than a refinement of everyday thinking.

— Albert Einstein, Theoretical Physicist

Everything must be made as simple as possible. But not simpler.

— Albert Einstein, Theoretical Physicist

If voting made any difference they wouldn’t let us do it.

— Mark Twain, American Writer

It is the mark of an educated mind, to entertain a thought without accepting it.

— Aristotle, Greek Philosopher and Scientist
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