Without natural law, man-made laws are emptied of meaning, subjecting us to the vagaries of legislated human feeling Natural Law and Human Motives Pierre Manent the sixth and final Gilson lecture delivered by Pierre Manent at the Institut Catholique de Paris in March 2017. The subject of Manent's lectures was natural law, understood not from a metaphysical perspective but from the point of view of moral and political philosophy. Manent aims to recover a robust understanding of "liberty under law," both in the form of political command (or what one might call legitimate moral and political authority) and of those principles of the good that are inherent in the full manifestation of human nature and human motives. "Natural law is the law or the practical principles that human beings do not make because they belong to their modern age is delighted to publish Pierre Manent was director of studies at L'École des Hautes Études en Sciences Sociales, Paris, until his retirement in 2014. This lecture was translated from the French by Ralph C. Hancock. modernagejournal.com 61http://www.modernagejournal.com