14 Thou shalt not curse the deaf, nor put a stumblingblock before the blind, but shalt fear thy God: I am the LORD.
[AD 604] Gregory the Dialogist on Leviticus 19:14
For to curse the deaf is to disparage one who is absent and does not hear; but to put a stumbling-block before the blind is to act indeed with discernment, but yet to give cause of offence to him who has not the light of discernment.