Oliver Wendell Holmes, Sr. : (4) " The world’s great men have not commonly been great scholars, nor its great scholars great men. " - Oliver Wendell Holmes, Sr. " Wisdom is the abstract of the past, but beauty is the promise of the future. " - Oliver Wendell Holmes, Sr. " The Amen of nature is always a flower. " - Oliver Wendell Holmes, Sr. " Don’t flatter yourselves that friendship authorizes you to say disagreeable things to your intimates. On the contrary, the nearer you come into relation with a person, the more necessary do tact and courtesy become. " - Oliver Wendell Holmes, Sr.