Then your words of abuse today may turn into a universally valid principle of denigration, for words are magical formulae. They leave fingermarks behind on the brain, which in the twinkling of an eye becomes the footprints of history. One ought to watch one’s every word. – Franz Kafka, quoted by Gustav Janouch, Conversations with Kafka

A knowledge of general literature is one of the evidences of an enlightened mind; and to give an apt quotation at a fitting time, proves that the mind is stored with sentential lore that can always be used to great advantage by its possessor. – James Ellis, quoted in Day’s Collacon: An Encyclopædia of Prose Quota

It is a good thing for an uneducated man to read books of quotations. Bartlett’s Familiar Quotations is an admirable work, and I studied it intently. The quotations when engraved upon the memory give you good thoughts. They also make you anxious to read the authors and look for more. – Winston Churchill, Roving Commission: My Early Life, 1930