Some things are up to us [eph' hêmin] and some things are not up to us. Our opinions are up to us, and our impulses, desires, aversions–in short, whatever is our own doing. Our bodies are not up to us, nor are our possessions, our reputations, or our public offices, or, that is, whatever is not our own doing.
EpictetusYou ought to choose both physician and friend, not the most agreeable, but the most useful.
EpictetusWatch yourself as you go about your daily business and later reflect on what you saw, trying to identify the sources of distress in your life and thinking about how to avoid that distress.
EpictetusWithin our control are our own opinions, aspirations, and desires and the demons that distract us from these goals. Outside of our control are such things as what kind of body we have, whether or not we are born into wealth, and how we are regarded by others.
Epictetus