 When we focus on the recipient of the natural law, that is, us human beings, the thesis of Aquinas’s natural law theory that comes to the fore is that the natural law constitutes the basic principles of practical rationality for human beings, and has this status by nature (ST IaIIae 94, 2). The notion that the natural law  constitutes the basic principles of practical rationality implies, for Aquinas, both that the precepts of the natural law are universally binding by nature (ST IaIIae 94, 4) and that the precepts of the natural law are universally knowable by nature (ST IaIIae 94, 4; 94, 6). 