A Quote by François, Duc de La Rochefoucauld on future, gratitude, hope, humor, mankind, secrets, and wit

In most of mankind, gratitude is merely a secret hope of further favours. Note: A saying ascribed to Sir Robert Walpole by Hazlitt in his Wit and Humor: "The gratitude of place-expectants is a lively sense of future favours" is obviously derived from La Rochefoucauld.