The Conferences Of John Cassian by John Cassian
Chapter VII. How nothing should be put before love, or after anger.
As then nothing should be put before love, so on the other hand nothing should be put below rage and anger. For all things, however useful and necessary they seem, should yet be disregarded that disturbing anger may be avoided, and all things even which we think are unfortunate should be undertaken and endured that the calm of love and peace may be preserved unimpaired, because we should reckon nothing more damaging than anger and vexation, and nothing more advantageous than love.