There are two methods to subdue anger. First, that before a person undertakes to act, he places before his mind the contumelies and sufferings which he will likely encounter, and, by reflecting on the shame borne by our Saviour, prepares himself to bear them patiently. Secondly, that when we behold the excesses of others, we direct our thoughts to our own excesses, by which we offend others. This consideration of our own faults will lead us to excuse those of others. For a person who piously considers that he also has something which others must bear patiently in him will be easily disposed to bear patiently injuries he receives from others.
--Pope St. Gregory the Great
