Doctor of Philosophy | philosophy | Philosophy | Jewish philosophy | Indian philosophy | Chinese philosophy | Islamic philosophy | University of Belgrade Faculty of Philosophy | Philosophy of mathematics | philosophy of mathematics | Objectivity (philosophy) | Buddhist philosophy | Analytic philosophy | analytic philosophy | Ubuntu (philosophy) | The Journal of Philosophy | school of philosophy | Philosophy of mind | Natural philosophy | natural philosophy | Medieval philosophy | Marxist philosophy | history and philosophy of science | Hindu philosophy | Unix philosophy | Three Books of Occult Philosophy | Royal Institute of Philosophy | Power (philosophy) | Philosophy, Politics and Economics | Philosophy of Miracle |
He studied the humanities at the Fragerherren gymnasium of Zwolle, philosophy and jurisprudence at Cologne University, where he became doctor of philosophy and both branches of law, and also licentiate of theology; he also taught peripatetic philosophy at the Montanum gymnasium there.