hard words break no bones
Hurtful words cannot cause any physical pain and thus will be ignored or disregarded. I've never been affected by people's criticism—hard words break no bones, after all.
Hard words break no bones.
Prov. Verbal abuse does not physically hurt you, and therefore you should not be very upset by it. (Can be used to reply to someone who is verbally abusing you.) Jill: I can't believe some of the names Fred called me. Jane: Well, hard words break no bones.