François de La Rochefoucauld, 2nd Duke of La Rochefoucauld, Prince de Marcillac (French: [fʁɑ̃swa d(ə) la ʁɔʃfuko]; 15 September 1613 – 17 March 1680) was an accomplished French moralist of the era of French Classical literature and author of Maximes and Memoirs, the only two works of his dense literary...
Gratitude is not only the greatest of virtues, but the parent of all others.
Gratitude is born in hearts that take time to count up past mercies.
Gratitude is merely the secret hope of further favors.