Do not imagine that the knowledge, which I so much recommend to you, is confined to books, pleasing, useful, and necessary as that knowledge is: but I comprehend in it the great knowledge of the world, still more necessary than that of books. In truth, they assist one another reciprocally; and no man will have either perfectly, who has not both. The knowledge of the world is only to be acquired in the world and not in a closet. Books alone will never teach it you; but they will suggest many things to your observation, which might, otherwise escape you; and your own observations upon mankind, when compared with those which you will find in books, will help you to fix the true point.
Lord Chesterfield (1694-1773) English statesman, wit [Philip Dormer Stanhope]
Letter to his son, #112 (4 Oct 1746)
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