It’s amazing how much funny stuff there is…. [A] river of rich comedic milk is flowing across the land, and as fast as I skim off the cream more cream appears…. I may be doomed to wade around forever in other people’s pith. Not that it’s such a bad life. – Robert Byrne, The Third and Possibly the Best 637 Best Things Anybody Ever Said,

A learned historian declared to me of a contemporary, that the latter had appropriated his researches; he might, indeed, and he had a right to refer to the same originals; but if his predecessor had opened the sources for him, gratitude is not a silent virtue. – Isaac D’Israeli, “Quotation,” A Second Series of Curiosities of Literature

I am now to offer some thoughts upon that sameness or familiarity which we frequently find between passages in different authors without quotation. This may be one of three things either what is called Plagiarism, or Imitation, or Coincidence. – James Boswell, “The Hypochondriack,” No.XXII, 1779