Epictetus, Enchiridion and Selections from the Discourses

"Fortify yourself with contentment for this is an impregnable fortress."

"As the sun does not wait for prayers and incantations tob e induced to rise, but immediately shines and is saluted by all, so do you also not wait for clappings of hands and shouts of praise tob e induced to do good, but be a doer of good voluntarily and you will be beloved as much as the sun."

"A city is not adorned by external things, but by the virtue of those who dwell in it."

"When you do anything from a clear judgment that it ought to be done, never shrink from being seen to do it, even though the world should misunderstand it; for if you are not acting rightly, shun the action itself; if you are, why fear those who wrongly censure you?"

"The condition and characteristic of an uninstructed person is this: he never expects from himself profit (advantage) nor harm, but from externals. The condition and characteristic of a philosopher is this: he expects all advantage and all harm from himself."

"He who exercises wisdom, exercises the knowledge which is about God."