Abstract
There are various ways in which a person's freedom of action may be diminished or restricted. Instead of acting, he may be acted upon; or he may be unable to help doing what he does. He may suffer from some disability, have a duty imposed on him or do something because he is obliged to do it. In this essay, I wish to examine the notion of being obliged to do something. I shall investigate the differences between ‘being obliged by A to do X’ and ‘being obliged to A for X’; between ‘being obliged to do X’ and ‘having an obligation to do X’; between being physically obliged and being morally, legally and logically obliged; and between saying ‘X is something I am obliged to do’, ‘X is something I choose to do’ and ‘X is something I ought to do’.