Learning acquired in youth arrests the evil of old age; and if you understand that old age has wisdom for its food, you will so conduct yourself in youth that your old age will not lack for nourishment.

Not to anticipate is already to moan.

As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.

The body of the earth is of the nature of a fish... because it draws water as its breath instead of air.

He who has access to the fountain does not go to the water-pot.

Ask counsel of him who rules himself well.

The eye, the window of the soul, is the chief means whereby the understanding can most fully and abundantly appreciate the infinite works of Nature; and the ear is second.