Logic. The science of the formal principles of reasoning. A science that deals with the principles and criteria of validity of inference and demonstration.
Aesthetics. The discipline dealing with the nature of beauty, art and taste. Dealing with the creation and appreciation of beauty.
Ethics. The discipline dealing with correctness and with moral duty and obligation.
Metaphysics. The system of principles underlying a particular study or subject.
Epistemology. The study of the nature and grounds of knowledge especially with reference to its limits and validity.
A discipline comprising as its core logic, aesthetics, ethics, metaphysics and epistemology.
Philosophy tests our most fundamental values, beliefs and convictions for the purpose of establishing their correctness. Philosophy at the same time realizes that the basic questions as to what it means to establish correctness are most often unanswerable.