Man is most nearly himself when he achieves the seriousness of a child at play.

Men who love wisdom should acquaint themselves with a great many particulars.

Men who wish to know about the world must learn about it in its particular details.

Most people do not take heed of the things they encounter, nor do they grasp them even when they have learned about them, although they suppose they do.

Much learning does not teach understanding.

Nature is wont to hide herself.

No man ever steps in the same river twice, for it's not the same river and he's not the same man.

No one that encounters prosperity does not also encounter danger.

Nothing is permanent but change.

Opposition brings concord. Out of discord comes the fairest harmony.