Life is made of our attitudes. And there are certain things that the gods oblige us to live through. Their reason for this does not matter, and there is no action we can take to make them pass us by.
Mental violence has no potency and injures only the person whose thoughts are violent. It is otherwise with mental non-violence. It has potency which the world does not yet know.
When self control is lacking in small things, the ability to apply it to matters of importance withers away. Every day in which one does not at least deny himself some trifle is badly spent and a threat to the day following.
And if a friend does you wrong, then say: "I forgive you what you have done to me; that you have done it to YOURSELF, however--how could I forgive that!