Knowledge of Ethics, Definition, Subject and Aim

On the base of literal meaning and root of manner, it is in a group of features which is fixed and determined and the person having this feature immediately does things according to it. But literally it is a knowledge which introduces good and bad sensual characteristics and practices according to them, and shows the ways to attain good characteristics and good acts and avoid bad ones. The subject of this knowledge is limited regarding self and is vast concerning feature and there are four commonalities. This knowledge cleans self and beautifies actions and knowledge of code of ethics and manners does the same.