Love
That all bodily mortifications and other exercises are useless, but as they serve to arrive at the union with GOD by love; that he had well considered this, and found it the shortest way to go straight to Him by a continual exercise of love, and doing all things for His sake.
Nothing but love can expel and conquer our selfishness.
I do not ask from you a love tender and emotional, but only that your will should lean towards love, and that, notwithstanding all the corrupt desires of your heart, you should prefer God before self and the whole world.
Drink freely of the sacred wine of love, and it will cure you of the evil tempers which lead you to these perverse judgments.