About this obedience, however, there is a certain thing to remember: it must be willing, not enforced.

The laws will of course do all they can to enforce it; but not only can they never do this completely, but even if they could, they would not produce morality.

Conduct which, if willing, we should call highly moral, we shall, if enforced only, call nothing more than legal.

We do not call a wild bear tame because it is so well caged that there is no fear of its attacking us; nor do we call a man good because, though his desires are evil, we have made him afraid to gratify them.

Further, it is not enough that the obedience in question be willing in the sense that it does not give us pain.