In time one came to recognize the type in other men, with differences and variations, as normal; men whose energies were the greater, the less they wasted on thought; men who sprang from the soil to power; apt to be distrustful of themselves and of others; shy; jealous; sometimes vindictive; more or less dull in outward appearance; always needing stimulants, but for whom action was the highest stimulant — the instinct of fight.
The Education of Henry Adams (1907)