Luigi Ferrajoli (Florence, Italy – 1940) is a judge and philosopher. Between 1970 and 2003 he was a professor at the Università degli Studi di Camerino, teaching Philosophy of Law and General Theory of Law. During those years, he held, among other positions, that of Director of the Institute of Historical, Legal, Philosophical and Political Studies. From 2003 on, he has taught at Universtà Roma Tre, where he is currently Professor Emeritus of Philosophy of Law. He is also Doctor Honoris Causa in several university. His most important works include Per una Constituzione della Terra. L’umanità al bivio (2022), La construzione della democracia. Teoria del garantismo costituzionale (2021), Manifesto per l’uguaglianza (2018), Constituzionalismo oltre lo Stato (2017), Potere Selvaggi. La crisi della democracia italiana (2011), and Principia iuris. Teoria del diritto e della democracia (3 volumes, 2007).