Leviticus 19:14

Since the Law comprehends under the word murder, all the wrongs whereby men are unjustly injured, that cruelty was especially to be condemned by which those wretched persons are afflicted, whose calamity ought rather to conciliate our compassion. For, if any particle of humanity exists in us, when we meet a blind man we shall be solicitous lest he should stumble or fall, and, if he goes astray, we shall stretch out our hands to him and try to bring him back into the way; we shall also spare the deaf, for to insult them is no less absurd or barbarous than to assail stones with reproaches. It is, therefore, gross brutality to increase the ills of those whom our natural sense impels us to relieve, and who are already troubled more than enough. Let us, then, learn from these words, that the weaker people are, the more secure ought they to be from all oppression or injury, and that, when we attack the defenseless, the crime of cruelty is greatly aggravated, whilst any insult against the calamitous is altogether intolerable to God.