When a man thinks happily, he finds no foot-track in the field he traverses. All spontaneous thought is irrespective of all else. – Ralph Waldo Emerson, “Quotation and Originality,” Letters and Social Aims, 1876

But, perhaps, the excellence of aphorisms consists not so much in the expression of some rare or abstruse sentiment, as in the comprehension of some obvious and useful truth in a few words. – Samuel Johnson, The Rambler, November 19, 1751

Someone — Cyril Connolly? Ezra Pound? — once said that anything that can be read twice is literature; I would say that anything that bears saying twice is quotable. – Joseph Epstein, “Quotatious,” A Line Out for a Walk: Familiar Essays, 1991