"Make it thy business to know thyself, which is the most difficult lesson in the world. Yet from this lesson thou will learn to avoid the frog's foolish ambition of swelling to rival the bigness of the ox."

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I learned 30 years ago that it is foolish to scold. I have enough trouble overcoming my own limitations without fretting over the fact that God has not seen fit to distribute evenly the gift of intelligence.

— John Wanamaker