If we are so contemptibly selfish that we canโt radiate a little happiness and pass on a bit of honest appreciation without trying to screw something out of the other person in returnโif our souls are no bigger than sour crab apples, we shall meet with the failure we so richly deserve.
Dale CarnegieEnthusiasm is the dynamics of your personality. Without it, whatever abilities you may possess lie dormant; and it is safe to say that nearly every man has more latent power than he ever learns to use. You may have knowledge, sound judgment, good reasoning faculties; but no one-not even yourself-will know it until you discover how to put your heart into thought and action.
Dale Carnegie