道德
International politics is a ruthless and dangerous business, and it is foolish to expect states to behave according to moral principles.
The separation of law and morals is a necessary feature of a legal system.
The existence of a legal system is a matter of fact, not of morality.
The distinction between law and morality is a fundamental one in legal philosophy.
Legal obligations are not merely moral obligations backed by sanctions.
The concept of justice is not a legal concept, but a moral one.
The separation of law and morals is a necessary condition for the existence of a legal system.