Stoicism

Epictetus:

"Freedom is secured not by the fulfilling of men's desires, but by the removal of desire." (iv.1.175)

"Where is the good? In the will. Where is the evil? In the will. Where is neither of them? In those things that are independent of the will." (ii.16.1)

"Man is disturbed not by things, but by the views he takes of them." (Ench. 5)

"If, therefore, any be unhappy, let him remember that he is unhappy by reason of himself alone." (iii.24.2)

"I am formed by nature for my own good: I am not formed for my own evil." (iii.24.83)

"Permit nothing to cleave to you that is not your own; nothing to grow to you that may give you agony when it is torn away." (iv.1.112)

Philosophy does not promise to secure anything external for man, otherwise it would be admitting something that lies beyond its proper subject-matter. For as the material of the carpenter is wood, and that of statuary bronze, so the subject-matter of the art of living is each person's own life. - Epicteus


Marcus Aurelius:

"Get rid of the judgement, get rid of the 'I am hurt,' you are rid of the hurt itself." (viii.40)

"Everything is right for me, which is right for you, O Universe. Nothing for me is too early or too late, which comes in due time for you. Everything is fruit to me which your seasons bring, O Nature. From you are all things, in you are all things, to you all things return." (iv.23)

"If you work at that which is before you, following right reason seriously, vigorously, calmly, without allowing anything else to distract you, but keeping your divine part pure, as if you were bound to give it back immediately; if you hold to this, expecting nothing, but satisfied to live now according to nature, speaking heroic truth in every word which you utter, you will live happy. And there is no man able to prevent this." (iii.12)

"How ridiculous and how strange to be surprised at anything which happens in life!" (xii.13)

"Outward things cannot touch the soul, not in the least degree; nor have they admission to the soul, nor can they turn or move the soul; but the soul turns and moves itself alone." (iv.3)

"Because your own strength is unequal to the task, do not assume that it is beyond the powers of man; but if anything is within the powers and province of man, believe that it is within your own compass also" (vi.19)

"Or is it your reputation that's bothering you? But look at how soon we're all forgotten. The abyss of endless time that swallows it all. The emptiness of those applauding hands." (iv.3)

Make for yourself a definition or description of the thing which is presented to you, so as to see distinctly what kind of a thing it is in its substance, in its nudity, in its complete entirety, and tell yourself its proper name, and the names of the things of which it has been compounded, and into which it will be resolved. For nothing is so productive of elevation of mind as to be able to examine methodically and truly every object which is presented to you in life, and always to look at things so as to see at the same time what kind of universe this is, and what kind of use everything performs in it, and what value everything has with reference to the whole. —Marcus Aurelius, Meditations, iii. 11.

Constantly regard the universe as one living being, having one substance and one soul; and observe how all things have reference to one perception, the perception of this one living being; and how all things act with one movement; and how all things are the cooperating causes of all things that exist; observe too the continuous spinning of the thread and the structure of the web. —Marcus Aurelius, Meditations, iv. 40.

Say to yourself in the early morning: I shall meet today ungrateful, violent, treacherous, envious, uncharitable men. All of these things have come upon them through ignorance of real good and ill... I can neither be harmed by any of them, for no man will involve me in wrong, nor can I be angry with my kinsman or hate him; for we have come into the world to work together... - Marcus Aurelius, Book II Part-I


Seneca the Younger:

"The point is, not how long you live, but how nobly you live." - (Ep. 101.15)

"That which Fortune has not given, she cannot take away." (Ep. 59.18)

"Let Nature deal with matter, which is her own, as she pleases; let us be cheerful and brave in the face of everything, reflecting that it is nothing of our own that perishes." (De Provid. v.8)

"Virtue is nothing else than right reason." (Ep. 66.32)