According to man's environment, society has made as many different types of men as there are varieties in zoology. The differences between a soldier, a workman, a statesman, a tradesman, a sailor, a poet, a pauper and a priest, are more difficult to seize, but quite considerable as the differences between a wolf, a lion, an ass, a crow, a sea-calf, a sheep, and so on.
A courage which looks easy & yet is rare; the courage of a teacher repeating day after day the same lessons - the least rewarded of all forms of courage.