Constant practice devoted to one subject often outdoes both intelligence and skill. - Assiduus usus uni rei deditus et ingenium et artem saepe vincit

In a republic this rule ought to be observed: that the majority should not have the predominant power.

Virtue is its own reward.

As I give thought to the matter, I find four causes for the apparent misery of old age; first, it withdraws us from active accomplishments; second, it renders the body less powerful; third, it deprives us of almost all forms of enjoyment; fourth, it stands not far from death.

Nature has lent us life at interest, like money, and has fixed no day for its payment.

Not only is there an art in knowing a thing, but also a certain art in teaching it.

It is not only arrogant, but it is profligate, for a man to disregard the world's opinion of himself.