The best marriages, like the best lives, were both happy and unhappy. There was even a kind of necessary tension, a certain tautness between the partners that gave the marriage strength, like the tautness of a full sail. You went forward on it.
Anne Morrow Lindbergh, Joseph Viertel, Fletcher Knebel, Paul De Kruif, Charles Waldo Bailey (1962). “Reader's digest condensed books”