Laws, hormones and neurons, a text by Dr. Gerardo Laveaga allows us to question ourselves about the future of Law, in an intricate interdisciplinary world that increasingly provides elements and mechanisms to obtain certainties and break paradigms previously established in the study of Law. Will, obedience, compliance with the law; these are just some of the topics in which Gerardo Laveaga makes instrospection as part of the epistemological foundation of the creation of norms and his new findings in the study of human behavior. Disciplines such as biology, neurosciences, psychiatry and psychology, endocrinology, among many others, allow us to enter into new ways of conceptualizing and categorizing key elements as human beings and our own nature. This poses important challenges to the legal sciences, particularly in their form of normative appropriation.