The man whose book is filled with quotations, may be said to creep along the shore of authors, as if he were afraid to trust himself to the free compass of reasoning. – Quoted unattributed in The Universal Magazine of Knowledge and Pleasure, April 1

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

It is my belief that nearly any invented quotation, played with confidence, stands a good chance to deceive. – Mark Twain (Samuel L. Clemens), Following the Equator: A Journey Around the Worl

Only the use of footnotes enables historians to make their texts not monologues but conversations, in which modern scholars, their predecessors, and their subjects all take part. – Anthony Grafton (b.1950), The Footnote: A Curious History, “Epilogue: Some Concl