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Never invest in any idea you can't illustrate with a crayon.

I must learn to be content with being happier than I deserve.

The writer must believe that what he is doing is the most important thing in the world. And he must hold to this illusion even when he knows it is not true.

All businesses need to be young forever. If your customer base ages with you， you're Woolworth's.

Science is not just a collection of facts; it is a way of thinking.

What you see is what you see.