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

You will find professed quotations from authors, of the correctness of which you will not be satisfied; and how important is it to be able to satisfy yourself by examining the originals! – Theodore Dwight, quoted in President Dwight’s Decisions of Questions Discu

[T]he governess… looked upon him [Mr. Swiveller] as a literary gentleman of eccentric habits, and of a most prodigious talent in quotation. – Charles Dickens, The Old Curiosity Shop, 1841