“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.”

“Is it not the same distance to God everywhere?”

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

“Every habit and faculty is confirmed and strengthened by the corresponding actions, that of walking by walking, that of running by running. If you wish to be a good reader, read; if you wish to be a good writer, write. If you should give up reading for thirty days one after the other, and be engaged in something else, you will know what happens. So also if you lie in bed for ten days, get up and try to take a rather long walk, and you will see how wobbly your legs are. In general, therefore, if you want to do something, make a habit of it; if you want not to do something, refrain from doing it, and accustom yourself to something else instead.”

“What would have become of Hercules do you think if there had been no lion, hydra, stag or boar – and no savage criminals to rid the world of? What would he have done in the absence of such challenges? Obviously he would have just rolled over in bed and gone back to sleep. So by snoring his life away in luxury and comfort he never would have developed into the mighty Hercules. And even if he had, what good would it have done him? What would have been the use of those arms, that physique, and that noble soul, without crises or conditions to stir into him action?”

“Philosophy does not claim to secure for us anything outside our control. Otherwise it would be taking on matters that do not concern it. For as wood is the material of the carpenter, and marble that of the sculptor, so the subject matter of the art of life is the life of the self.”

“For in this Case, we are not to give Credit to the Many, who say, that none ought to be educated but the Free; but rather to the Philosophers, who say, that the Well-educated alone are free.”

“God save me from fools with a little philosophy—no one is more difficult to reach.”

“The philosopher’s school, ye men, is a surgery: you ought not to go out of it with pleasure, but with pain. For you are not in sound health when you enter.”

“The first and most important field of philosophy is the application of principles such as “Do not lie.” Next come the proofs, such as why we should not lie. The third field supports and articulates the proofs, by asking, for example, “How does this prove it? What exactly is a proof, what is logical inference, what is contradiction, what is truth, what is falsehood?” Thus, the third field is necessary because of the second, and the second because of the first. The most important, though, the one that should occupy most of our time, is the first. But we do just the opposite. We are preoccupied with the third field and give that all our attention, passing the first by altogether. The result is that we lie – but have no difficulty proving why we shouldn’t.”

“If you want to make progress, put up with being perceived as ignorant or naive in worldly matters, don’t aspire to a reputation for sagacity. If you do impress others as somebody, don’t altogether believe it. You have to realize, it isn’t easy to keep your will in agreement with nature, as well as externals. Caring about the one inevitably means you are going to shortchange the other.”

“Remember to act always as if you were at a symposium. When the food or drink comes around, reach out and take some politely; if it passes you by don’t try pulling it back. And if it has not reached you yet, don’t let your desire run ahead of you, be patient until your turn comes. Adopt a similar attitude with regard to children, wife, wealth and status, and in time, you will be entitled to dine with the gods. Go further and decline these goods even when they are on offer and you will have a share in the gods’ power as well as their company. That is how Diogenes, Heraclitus and philosophers like them came to be called, and considered, divine.”

“An ignorant person is inclined to blame others for his own misfortune. To blame oneself is proof of progress. But the wise man never has to blame another or himself.”

“Remember, it is not enough to be hit or insulted to be harmed, you must believe that you are being harmed. If someone succeeds in provoking you, realize that your mind is complicit in the provocation. Which is why it is essential that we not respond impulsively to impressions; take a moment before reacting, and you will find it easier to maintain control.”

“Most of what passes for legitimate entertainment is inferior or foolish and only caters to or exploits people’s weaknesses. Avoid being one of the mob who indulges in such pastimes. Your life is too short and you have important things to do. Be discriminating about what images and ideas you permit into your mind. If you yourself don’t choose what thoughts and images you expose yourself to, someone else will, and their motives may not be the highest. It is the easiest thing in the world to slide imperceptibly into vulgarity. But there’s no need for that to happen if you determine not to waste your time and attention on mindless pap.”