It is difficult to persuade mankind that the love of virtue is the love of themselves.

No sober person dances.

A nation can survive its fools, even the ambitious. But it cannot survive treason from within....for the traitor appears not to be a traitor...he rots the soul of a nation...he infects the body politic so that it can no longer resist.

We must not only obtain Wisdom: we must enjoy her.

The man who is always fortunate cannot easily have a great reverence for virtue.

For out of such an ungoverned populace one is usually chosen as a leader, someone bold and unscrupulous who curries favor with the people by giving them other men's property. To such a man the protection of public office is given, and continually renewed. He emerges as a tyrant over the very people who raised him to power.

Mathematics is an obscure field, an abstruse science, complicated and exact; yet so many have attained perfection in it that we might conclude almost anyone who seriously applied himself would achieve a measure of success.