Happiness is man's greatest aim in life. Tranquility and rationality are the cornerstones of happiness.

The knowledge of sin is the beginning of salvation.

Let no one be slow to seek wisdom when he is young nor weary in the search of it when he has grown old. For no age is too early or too late for the health of the soul.

Moreover, the universe as a whole is infinite, for whatever is limited has an outermost edge to limit it, and such an edge is defined by something beyond. Since the universe has no edge, it has no limit; and since it lacks a limit, it is infinite and unbounded. Moreover, the universe is infinite both in the number of its atoms and in the extent of its void.

Tranquil pleasure constitutes human beings' supreme good

The acquisition of riches has been for many men, not an end, but a change, of troubles.

Most men are in a coma when they are at rest and mad when they act.