Epictetus

"Other people's views and troubles are not your own."

"The tranquility that comes from good character is the highest good."

"No great thing is created suddenly any more than a bunch of grapes or a fig."

"Everything has two handles: one by which it may be carried, another by which it cannot."

"He is a wise man who does not grieve for the things which he has not, but rejoices for those which he has."

"It is the act of an ill-instructed man to blame others for his own bad condition."

"Shall I tell you what the feeling of duty is? It is a bond to act righteously."

"When you have decided that a thing must be done and are doing it, never avoid being seen doing it."

"No one is free who is not a master of himself."

"There is no failure except in no longer trying."

"The good is not something external that can be lost."

"Desire attracts its own obstacles."

"Be like a rock against which the waves continually crash, but which stands firm."

"Your ability to control your thoughts determines the quality of your life."

"The chief good is not in things external to us, but within us."

"Bear and forbear."

"Take away your opinion, and then there is taken away the complaint."

"God has entrusted me with myself."

"You became undeserving the moment you stopped trying."

"Remember that you are an actor in a play, the character of which is determined by the playwright."

"If a person speaks badly of you, consider whether what they say is true."

"The man who loses his wealth is not hurt thereby; but rather he who craves it."

"Pains and aches are no impediment to your mind unless your mind admits that they are."

"It is easier to give up pleasure than to moderate it."

"What then is death? A scary mask. Take it off—see, it does not bite."

"You alone are responsible for the quality of your life."

"We are not angry at our friends unless we feel betrayed."

"The impediment to action advances action. What stands in the way becomes the way."

"You are grieved at not being praised. Do you know that he who was not praised has no reward?"

"Do not demand that things happen as you wish, but wish them to happen as they do."