Hurting other people's feelings is wrong.
Caleb is helping his younger brother do his homework one afternoon.
Caleb wants to give his brother feedback on his progress.
Caleb encourages his brother and tells him that he can get the answers himself.
Caleb tells his brother that he is stupid, and he should know all the answers by now.
Caleb's brother starts to understand the material that they are working on.
Caleb's brother begins to cry and stops trying to work on the material.