1. Man, consider first what the matter is (which you propose to do), then your own nature also, what it is able to bear. If you are a wrestler, look at your shoulders, your thighs, your loins: for different men are naturally formed for different things.
Discourses and Selected Writings of Epictetus
2. Man, if you are anything, both walk alone and talk to yourself, and do not hide yourself in the chorus. Examine a little at last, look around, stir yourself up, that you may know who you are.