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All intelligent thoughts have already been thought; what is necessary is only to try to think them again.
Johann Wolfgang von Goethe

An idea that is not dangerous is unworthy of being called an idea at all.
Oscar Wilde

Everything begins with an idea.
Earl Nightingale

Great ideas are never remembered and dumb statements are never forgotten.
/Murphy's Law/

Ideas are more powerful than guns. We would not let our enemies have guns, why should we let them have ideas.
Joseph Stalin

In case of doubt, make it sound convincing.
/Murphy's Law/

It is always better to have no ideas than false ones; to believe nothing, than to believe what is wrong.
Thomas Jefferson

Pure mathematics is, in its way, the poetry of logical ideas.
Albert Einstein

The difficulty lies not so much in developing new ideas as in escaping from old ones.
John Maynard Keynes

The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.
F. Scott Fitzgerald

To die for an idea; it is unquestionably noble. But how much nobler it would be if men died for ideas that were true!
H. L. Mencken

When ideas fail, words come in very handy.
Johann Wolfgang von Goethe

You ask me if I keep a notebook to record my great ideas. I've only ever had one.
Albert Einstein

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