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

He who trains his tongue to quote the learned sages will be known, far and wide, as a smart-ass. – Howard Kandel, The Power of Positive Pessimism: Proverbs for Our Times, 1964

No claim is made here for scholarship, or for the earliest use of a quote or even, in some cases, the precise wording…. No matter: in my opinion, they are in this form graceful, compact and cogent. – R.I. Fitzhenry, preface to The David & Charles Book of Quotations, September 198

A writer can get into a vast deal of trouble through misquotation. If you ever want to receive lots of mail, I recommend you get a Shakespeare quote wrong in a magazine or newspaper.” – Joseph Epstein, Foreward to Fred Shapiro’s Yale Book of Quotations, 2006