在文明社会中，唯一合法行使权力来逆行对方意愿的目的，是为了防止对他人的伤害。
The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.
If you borrow something， try to return it in better shape than you received it. Clean it， sharpen it， fill it up.