Mr. [Thomas] Gray the poet has often observed to me that if a man were to form a Book of what he had seen and heard himself it must in whatever hands prove a most useful and entertaining one. – Horace Walpole, quoted in Walpoliana, 1800

There are but few proverbial sayings that are not true, for they are all drawn from experience itself, which is the mother of all sciences. – Miguel de Cervantes

We who are quotatious are never truly alone, but always hear the cheerful flow of remarks made by dead writers so much more intelligent than we. – Joseph Epstein, “Quotatious,” A Line Out for a Walk: Familiar Essays, 1991

Most of the classical citations you shall hear or read in the current journals or speeches were not drawn from the originals, but from previous quotations in English books… – Ralph Waldo Emerson, “Quotation and Originality,” Letters and Social Aims, 1876