None are so old as those who have outlived enthusiasm.
Henry David Thoreau
Old age adds to the respect due to virtue, but it takes nothing from the contempt inspired by vice; it whitens only the hair.
Old age comes on suddenly, and not gradually as is thought.
Old age has deformities enough of its own. It should never add to them the deformity of vice.
Old age is a shipwreck.
Charles de Gaulle