Besides, it happens (how, I cannot tell) that an idea launched like a javelin in proverbial form strikes with sharper point on the hearer’s mind and leaves implanted barbs for meditation… – Desiderius Erasmus, Adages

Proverbs accordingly are somewhat analogous to those medical Formulas which, being in frequent use, are kept ready-made-up in the chemists’ shops, and which often save the framing of a distinct Prescription. – Richard Whately, Elements of Rhetoric

…have the same Use with Burning-Glasses, to collect the diffus’d Rays of Wit and Learning in Authors, and make them point with Warmth and Quickness upon the Reader’s Imagination. – Jonathan Swift, “A Letter of Advice to a Young Poet: Together With a Proposal fo

I am reminded of the professor who, in his declining hours, was asked by his devoted pupils for his final counsel. He replied, Verify your quotations. – Sir Winston Churchill