Great spirits have always encountered violent opposition from mediocre minds.

— Albert Einstein, German-born theoretical physicist and Nobel Laureate who developed the theory of relativity, one of the two pillars of modern physics, 1879-1955

If there is a door that might bring wind, close the door.

— Saudi proverb

A certain amount of opposition is a great help to a man. Kites rise against, not with, the wind. John Neal, U.S. architect, lawyer, author and art critic, 1793-1876)

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