[Q]uotations, like the words of our language itself, change in relevance and currency. – Robert Irvine Fitzhenry (1918–2008), The Harper Book of Quotations

Most of the classical citations you shall hear or read in the current journals or speeches were not drawn from the originals, but from previous quotations in English books… – Ralph Waldo Emerson, “Quotation and Originality,” Letters and Social Aims, 1876

A vast meaning is unfolded in each line, with such power that a sentence only a line long would suffice for a whole life’s training. – Rufinus (translated from Latin), about The Sentences of Sextus

Only roam on, therefore, all fearless, in the many garden of romantic chivalrous poesy, which drawing within its circle all that is glorious and inspiring, gave itself but little concern as to where its flowers originally grew. – C.O. Müller (Karl Otfried Müller), Introduction to a Scientific System