Miss Amesbury is especially happy in the use of quotations—and an apt quotation is like a lamp which flings its light over the whole sentence. – L.E. Landon, Romance and Reality, 1832

Nevertheless, a maxim does not necessarily become a proverb. Many grubs never grow to butterflies; and a maxim is only a proverb in its caterpillar stage—a candidate for a wider sphere and longer flight than most are destined to attain. – “Proverbs Secular and Sacred,” The North British Review, February 1858

But, perhaps, the excellence of aphorisms consists not so much in the expression of some rare or abstruse sentiment, as in the comprehension of some obvious and useful truth in a few words. – Samuel Johnson, The Rambler, November 19, 1751

In literary composition a well-chosen quotation lights up the page like a fine engraving… – William Francis Henry King, “Introduction,” Classical and Foreign Quotations, 18