If it is just to do those things which the law ordains to be done, he who does not do these is committing injustice; and if when he does not do them to him to whom the law commands, he is doing an injustice to that person, but the law commands one to be temperate, to possess property, to take care of one's body, and all other such things, then he who does not do these things is doing an injustice to himself.