Marian Hillar, philosopher, theologian, scientist, and linguist is the author or coauthor of several books and a leading expert on Michael Servetus and his legacy, and the Socinianism. Together with Christopher A. Hoffman he is translating for the first time into English major work of Servetus, Christianismi restitutio, of which four parts were already published. He published numerous papers in the area of history of philosophy, theology and ethics. His specialties are origin and evolution of Christian theology and Radical Reformation (Socinianism). He is listed in "Who's Who In Theology and Science." He lectured on theological issues, the Trinity, and science and religion at the Atlanta Bible College and debated the questions related to origin of the universe and evolution. Marian Hillar has M.D. and Ph.D. degrees from the University Medical School of Gdańsk and studied at the Jagiellonian University and at Sorbonne. He did research and taught in Europe at the University Medical School of Gdańsk and Università degli studi di Camerino, and in the USA at Baylor College of Medicine and Ponce School of Medicine. He is currently professor of philosophy/religious studies and the director of the Center for Philosophy and Socinian Studies. He is also professor of biochemistry/molecular biology at Texas Southern University in Houston. He is the founding editor and former editor-in-chief of Essays in the Philosophy of Humanism, a publication of American Humanist Association.