2 Now there is a great difference between the sin of one who is angry, and the cruelty of one who holds another in hatred. For even with our children are we angry; but who is ever found to hate his children? Among the very cattle too, the cow in a sort of weariness will sometimes in anger drive away her sucking calf; but anon she embraces it with all the affection of a mother. She is in a way disgusted with it, when she butts at it; yet when she misses it, she will seek after it.
Nor do we discipline our children otherwise, than with a degree of anger and indignation; yet we should not discipline them at all, but in love to them. So far then is every one who is angry from hating; that sometimes one would be rather convicted of hating, if he were not angry. For suppose a child wishes to play in some river's stream, by whose force he would be like to perish; if you see this, and patiently suffer it, this would be hating; your patient suffering him, is his death.
How far better is it to be angry and correct him, than by not being angry to suffer him to perish! Above all things then is hatred to be avoided, and the beam to be cast out of the eye. Great is the difference indeed between one's exceeding due limits in some words through anger, which he afterwards wipes off by repenting of it; and the keeping an insidious purpose shut up in the heart. Great, lastly, the difference between these words of Scripture; “My eye is disordered because of anger.” Whereas of the other it is said, “Whosoever hates his brother is a murderer.” Great is the difference between an eye disordered, and clean put out. A mote disorders, a beam puts clean out.
Source: Sermons on Selected Lessons of the New Testament (New Advent)