Dwight D. Eisenhower, “measure up!”

If you don’t have that courage to look at yourself and say, ‘Well, I failed miserably there, I hurt someone’s feelings needlessly, I lost my temper’ – which you must never do except deliberately – you don’t measure up to your own standards.

– Dwight D. Eisenhower

Source: Dale Carnegie’s Scrapbook; a Treasury of the Wisdom of the Ages
Image: CGP Grey (CC BY-SA 2.0)
Maxim: KNOWOL (CC BY-SA 2.0)