The ancients, who in these matters were not perhaps such blockheads as some may conceive, considered poetical quotation as one of the requisite ornaments of oratory. – Isaac D’Israeli, “Quotation,” A Second Series of Curiosities of Literature

The little honesty that exists among authors is discernible in the unconscionable way they misquote from the writings of others. – Arthur Schopenhauer, “On Authorship and Style,” translated from German by Mrs. R

The ability to quote is a serviceable substitute for wit. – Attributed to W. Somerset Maugham