Shakespeare, Measure for Measure, 1604. If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away. Henry David Thoreau, The Pond in Winter, 1857. Rudyard Kipling, The Second Jungle Book, 1895.
Parents are the bones on which children sharpen their teeth.
Peter Ustinov, Dear Me, 1977. Ain't Got That Swing. 65 A.D. Bad men live that they may eat and drink, wheras good men eat and drink that they may live. To travel hopefully is a better thing than to arrive. Robert Louis Stevenson, El Dorado, 1882.