Jónatas E. M. Machado is an International Law, European Union Law and Tax Law Professor of the Faculty of Law of the University of Coimbra, and Autonomous University of Lisbon, Portugal. He is author of several books and law articles on these and other constitutional law topics, such as Freedom of Religion, Freedom of Speech and Media Law. He obtained a Master’s degree with a thesis entitled "Religious Freedom in an Inclusive Constitutional Community" and a PhD degree, with a thesis entitled "Freedom of Expression". He a legal advisor, a member of the European Consortium on Church and State Research, a member of the list of OSCE Conciliators, and a tax law arbitrator in the Center of Administrative Arbitration, Lisbon. Professor Machado is Executive Director of the Human Rights Center of the Faculty of Law of the University of Coimbra. The anticorruption principle as a multilevel principle in International, European and Constitutional law is currently an important area of his research and teaching.