Mencius
義 yì means the ability to feel bad about yourself when you know you are not doing your share of the work, you are not doing your duty, etc. If you went on a trip in the forest with a group of friends, and everybody agreed to take turns washing the dishes, but you never took your turn, you would feel shame for what you had failed to do. Some of the English translations for this word are "sense of duty," "sense of right and wrong," "sense of justice," etc. It is important to note, however, that Mencius is describing a feeling of a person about what that person himself or herself does, not a feeling about what other people do.