The learned should be vigorous and diligent, but they should also be free-spirited. If they are too rigorous and austere, they have the death-dealing quality of autumn but lack the life-giving quality of spring. How can they develop people then?
A grub in filth is dirty, but it changes into a cicada and sips dew in the autumn breeze. Rotting plants have no luster, but they turn into foxfire and glow in the summer moonlight. So we know that purity emerges from impurity, and light is born from darkness.
