萌芽于古希腊的自然法经过罗马法学家、哲学家的努力,由“自然秩序”向“理性秩序”的自然法演进,随着中世纪教会势力的膨胀,需要对教皇权力与世俗国王权力进行划分,托马斯·阿奎那的自然法思想顺应了历史的需要,成为沟通古典自然法与中世纪基督教自然法的桥梁。 The natural law, which sprouted in ancient Greece, evolved from the “natural order” to the natural law of “rational order” through the efforts of Roman jurists and philosophers. With the expansion of the church forces in the Middle Ages, it is necessary to classify the powers of the pope and the secular kings , Thomas Aquinas’ conception of natural law conformed to the needs of history and became the bridge of communication between classical natural law and medieval Christian natural law.