- Those interested in philosophizing are prompted mainly by the desire to subject what is apparently matter-of-fact to a critical elucidation. The core area of theoretical philosophy comprises logic, the philosophy of language, epistemology and the philosophy of science. This area also includes natural philosophy, which inquires into the interpretation of nature and into the philosophical implications of the results produced by the natural sciences.
- The field of practical philosophy encompasses above all the general theory of action, moral philosophy and ethics, social philosophy, political philosophy and the philosophy of law.