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14c., originally the power of uniting mentally the impressions conveyed by the five physical senses, thus "ordinary understanding, without which one is foolish or insane" (Latin sensus communis, Greek koine aisthesis); meaning "good sense" is from 1726. Also, as an adjective, commonsense.
(1776) A pamphlet written by Thomas Paine that called for the United States to declare independence from Britain immediately. Written in a brisk and pungent style, Common Sense had a tremendous impact and helped to persuade many Americans that they could successfully wage a war for their independence.