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

There are but few proverbial sayings that are not true, for they are all drawn from experience itself, which is the mother of all sciences. – Miguel de Cervantes

I never have found the perfect quote. At best I have been able to find a string of quotations which merely circle the ineffable idea I seek to express. – Attributed to Caldwell O’Keefe in The Trademark Reporter, Vol.93, 2003

Collect as precious pearls the words of the wise and virtuous. – Abdelkader