Everyone knows that our habits are improved and strengthened through their exercise. In order to be a good walker, you need to walk a lot; in order to be a strong runner, you need to run frequently; in order to be a perceptive reader, you ought to read as much as you can. The same is true of your soul: if you become angry, you must know that you not only perform evil, but you also create an evil habit, and you increase your potential for further evil. —EPICTETUS
