He picked something out of everything he read. – Pliny

Precepts or maxims are of great weight; and a few useful ones at hand do more toward a happy life than whole volumes that we know not where to find. – Seneca

I suppose every old scholar has had the experience of reading something in a book which was significant to him, but which he could never find again. Sure he is that he read it there; but no one else ever read it, nor can he find it again, though he buy the book and ransack every page. – Ralph Waldo Emerson

Nothing ever becomes real till it is experienced—even a Proverb is no proverb to you till your Life has illustrated it. – John Keats, letter to George and Georgiana Keats, February 24, 1819