While the body is young and fine, the soul blunders, but as the body grows old it attains its highest power. Again, every good soul uses mind; but no body can produce mind: for how should that which is without mind produce mind? Again, while the soul uses the body as an instrument, it is not in it; just as the engineer is not in his engines (although many engines move without being touched by any one).

All this care for the world, we must believe, is taken by the Gods without any act of will or labor. As bodies which possess some power produce their effects by merely existing: e.g. the sun gives light and heat by merely existing; so, and far more so, the providence of the Gods acts without effort to itself and for the good of the objects of its forethought. This solves the problems of the Epicureans , who argue that what is divine neither has trouble itself nor gives trouble to others.

It is impossible that there should be so much providence in the last details, and none in the first principles. Then the arts of prophecy and of healing, which are part of the cosmos, come of the good providence of the Gods.

Necessity makes even the timid brave.

The Gods being good and making all things, there is no positive evil, it only comes by absence of good; just as darkness itself does not exist, but only comes about by absence of light.

Deliberate before you begin; but, having carefully done so, execute with vigour.

Ambition breaks the ties of blood, and forgets the obligations of gratitude.