Do not waste what remains of your life in speculating about your neighbors, unless with a view to some mutual benefit. To wonder what so-and-so is doing and why, or what he is saying, or thinking, or scheming -- in a word, anything that distracts you from fidelity to the ruler within you -- means a loss of opportunity for some other task.

Does a man shrink from change? Why, what can come into being save by change?

Observe the movements of the stars as if you were running their courses with them, and let your mind constantly dwell on the changes of the elements into each other. Such imaginings wash away the filth of life on the ground.

Everything that happens either happens in such a way as you are formed by nature to bear it, or as you are not formed by nature to bear it.

Man must be arched and buttressed from within, else the temple wavers to the dust.

Gluttony and drunkenness have two evils attendant on them; they make the carcass smart, as well as the pocket.

We are born for cooperation, as are the feet, the hands, the eyelids, and the upper and lower jaws.