Divine law
Natural law (Ius naturale)
Law of People or Nations (Ius gentium)
Every people that is governed by statutes and customs observes partly its own particular law and partly the common law of all mankind. Omnes populi qui legibus et moribus reguntur partim suo proprio, partim communi omnium hominum iure utuntur. Gaius, Institutes 1.1 (ca. 160 A.D.)
Seal of the Supreme Court of the United States
