Nigrinus

A well-conditioned human soul is like a target of some soft material. As life goes on, many archers take aim thereat; and every man’s quiver is full of subtle and varied arguments, but not every man shoots aright. Some draw the bow too tight, and let fly with undue violence. These hit the true direction, but their shafts do not lodge in the mark; their impetus carries

them right through the soul, and they pass on their way, leaving only a gaping wound behind them. Others make the contrary mistake: their bows are too slack, and their shafts never reach their destination; as often as not their force is spent at half distance, and they drop to earth. Or if they reach the mark, they do but graze its surface; there can be no deep wound, where the archer lacks strength.