"Common sense and a sense of humour are the same thing, moving at different speeds. A sense of humour is just common sense, dancing. Those who lack humour are without judgment and should be trusted with nothing."

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Common sense is merely unaided intuition, and unaided intuition is reasoning performed in the absense of instruments and the tested knowledge of science. Common sense tells us that massive satellites cannot hang suspended 36,000 kilometers above the one point on the earth's surface, but they do.

— E. O. Wilson