There are many things that we would throw away if we were not afraid that others might pick them up.
Source: Lord Henry, in The Picture of Dorian Gray, ch. 4, 1891.
-- Oscar Wilde, (Oct 16 1856-1900), Anglo-Irish playwright, novelist; He was noted for his flamboyant witty, sophisticated plays, e.g., The Importance of Being Ernest, 1895.