The relish of the mind is as various as that of the body, and like that too may be altered; and it is a mistake to think that men cannot change the displeasingness or indifferency that is in actions into pleasure and desire, if they will do but what is in their power.

A due consideration will do it in some cases; and practice, application, and custom in most.

Bread or tobacco may be neglected where they are shown to be useful to health, because of an indifferency or disrelish to them; reason and consideration at first recommends, and begins their trial, and use finds, or custom makes them pleasant.

That this is so in virtue too, is very certain.

Actions are pleasing or displeasing, either in themselves, or considered as a means to a greater and more desirable end.