Simplicity is the ultimate sophistication.

No human investigation can be called real science if it cannot be demonstrated mathematically.

Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!

In the days of thy youth seek to obtain that which shall compensate the losses of thy old age.

Nothing is hidden under the sun.

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.

Those who are inspired by a model other than Nature, labor in vain.