True courage … has so little to do with Anger, that there lies always the strongest Suspicion against it, where this Passion is highest. The true Courage is the cool and calm. The bravest of Men have the least of a brutal bullying Insolence; and in the very time of Danger are found the most serene, pleasant, and free. Rage, we know, can make a Coward forget himself and fight. But what is done in Fury, or Anger, can never be plac’d to the account of Courage.

Anthony Cooper, 3rd Earl of Shaftesbury (1671-1713) English politician and philosopher
Characteristicks of Men, Manners, Opinions, Times, Vol. 1, “Sensus Communis” (1711)