A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

For questions about logic, whether it concerns syllogistic logic, mathematical logic or the nature of logic itself.
For questions about ethics, a branch of philosophy dealing with morality, justice, virtue, vice, good and evil.
Epistemology is the study of knowledge, acquisition thereof, and the justification of belief in a given claim.
for applied philosophical questions about the study of science, the pursuit of scientific knowledge, and the scientific method
Metaphysics is a branch of philosophy concerned with explaining the essence of things, of the fundamental nature of being and the world and the principles that organize the universe. Metaphysics is su…
Philosophy of mathematics asks questions about mathematical theories and practices. It can include questions about the nature or reality of numbers, the ground and limits of formal systems and the nat…
should be used when the question is asking for specific references.
Philosophy of mind is a branch of philosophy that studies the nature of the mind, mental events, mental functions, mental properties, consciousness, and their relationship to the physical body, partic…
Concerns formal (syllogistic) fallacies, informal (rhetorical) fallacies, tactical misdirection, and errors in logic or reasoning more broadly put.
The history of philosophy is the study of philosophical ideas and concepts through time. Issues specifically related to history of philosophy might include (but are not limited to): How can changes in…
660 questions
Immanuel Kant was a German Enlightenment philosopher.
637 questions
Ontology is the study of the nature of being, existence or reality as such, as well as the basic categories of being and their relations.
for philosophical questions concerning the nature, origins, and usage of natural language
571 questions
Theology is the field of study and analysis that treats of God and of God's attributes and relations to the universe; the study of divine things or religious truth; divinity.
511 questions
The study of terms and their use.
Philosophy of religion is a branch of philosophy concerned with questions regarding religion, including the nature and existence of God, the examination of religious experience, analysis of religious …
459 questions
The construction, deconstruction and presentation of arguments for a position;
452 questions
Describing questions about the philosophy of politics and society which investigate concerns like liberty, justice and equality.
Aristotle was a Greek philosopher, famous for his prolific writings on a vast array of subjects, including logic, ethics, aesthetics, metaphysics, politics, and even the natural sciences. He is widely…
441 questions
Consciousness, and related notions like sentience and self-awareness, denote the capacity of certain organisms to express recognition of their own presence in the world.
Theories of truth deal with questions such as: what are truths? what makes them true? what is the relation between truths and the things that makes them true? Not to be confused with "what is the t…
Knowledge is a familiarity with someone or something, which can include facts, information, descriptions, or skills acquired through experience or education.
341 questions
Friedrich Nietzsche (1844-1900) was a German philosopher and poet. Nietzsche is consistently one of the most widely-read philosophers, even among laymen; yet his work is often elliptical, even cryptic…
334 questions
for questions concerning the freedom of choice of rational agents (often as opposed to determinism)
315 questions
Plato (424/423 BC – 348/347 BC) was a Classical Greek philosopher, writer of philosophical dialogues, and founder of the Academy in Athens, the first institution of higher learning in the Western worl…
a type of formal logic primarily developed in the 1960s that extends classical propositional and predicate logic to include operators expressing modality
By Einstein's definition, time is what clocks measure – but how can we define “clock” without referring to time? This tag is for such philosophical questions about the many unresolved issues concernin…
295 questions
If your question is more physics and less philosophy, consider asking it on Physics.SE (possibly with the soft-question tag).
283 questions
Ontological and metaphysical questions about the study of existence, being and the structure of reality.
281 questions
For questions about the correctness of a proof or the nature of proofs in general.
277 questions
Philosophy of logic is a branch of philosophy concerned with investigating the nature, scope and role of logic.
267 questions
For questions related to symbolic logic, also known as mathematical logic. Topics might range from philosophical implications of metamathematical results to technical questions.
250 questions
Metaphilosophy is the philosophical study of philosophy itself — its goals, methods, scope, and relationship to other intellectual disciplines or human projects.
245 questions
Ludwig Josef Johann Wittgenstein (1889 – 1951) was an Austrian-British philosopher, professor in philosophy at the University of Cambridge (1939-1947). He worked in foundations of mathematics and on m…
237 questions
for arguments that produce an inconsistency with common sense.
224 questions
Questions related to René Descartes (31 March 1596 – 11 February 1650)
203 questions
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