Many moons ago dictionaries of quotations may have been less needed than they are today. In those good/bad old days, people walked around with entire poems and all the Shakespearean soliloquies in their heads…. – Joseph Epstein, Foreword to Fred R. Shapiro’s Yale Book of Quotations, 200

How do people go to sleep? I’m afraid I’ve lost the knack. I might try busting myself smartly over the temple with the night-light. I might repeat to myself, slowly and soothingly, a list of quotations beautiful from minds profound; if I can remember any of the damn things. – Dorothy Parker, Here Lies, 1939

In such a case the writer is apt to have recourse to epigrams. Somewhere in this world there is an epigram for every dilemma. – Hendrik Willem van Loon, The Liberation of Mankind, 1926

We prefer to think that the absence of inverted commas guarantees the originality of a thought, whereas it may be merely that the utterer has forgotten its source. – Clifton Fadiman, The American Treasury, 1455-1955, 1955