Philosophy
Philosophy (from Greek φιλοσοφία, philosophia, literally "love of wisdom") is the study of general and fundamental problems concerning matters such as existence, knowledge, values, reason, mind, and language. The term was probably coined by Pythagoras (c. 570–495 BCE). Philosophical methods include questioning, critical discussion, rational argument, and systematic presentation. Classic philosophical questions include: Is it possible to know anything and to prove it? What is most real? Philosophers also pose more practical and concrete questions such as: Is there a best way to live? Is it better to be just or unjust (if one can get away with it)? Do humans have free will?
Philosophy
It is as absurd to expect members of philosophy departments to be philosophers as it is to expect members of art departments to be artists.
Leo Strauss, “What is liberal education?” Liberalism, Ancient and Modern (1968), p. 7. Reported in Hoyt's New Cyclopedia Of Practical Quotations (1922), p. 596-97.
Theology
All significant concepts of the modern theory of the state are secularized theological concepts not only because of their historical development - in which they were transferred from theology to the theory of the state, whereby, for example, the omnipotent God became the omnipotent lawgiver-but also because of their systematic structure, the recognition of which is necessary for a sociological consideration of these concepts. The exception in jurisprudence is analogous to the miracle in theology. Only by being aware of this analogy can we appreciate the manner in which the philosophical ideas of the state developed in the last centuries.
Carl Schmitt, Political Theology (1922; 1934), Ch. 3. Political Theology; translated by George Schwab.