propositionA statement or assertion that expresses a judgment or opinion.
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A statement that expresses a concept that can be true or false.
logicA system of reasoning guided by principles of validity.
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The science that investigates the principles governing correct or reliable inference.
metaphysicsThe branch of philosophy that deals with the first principles of things.
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A type of philosophy that uses broad concepts to help define reality and our understanding of it.
languageThe method of human communication using words in a structured and conventional way.
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The whole body of words and of methods of combination of words used by a nation, people, or race.
ethicsMoral principles that govern a person's behavior or the conducting of an activity.
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The discipline dealing with what is good and bad, and with moral duty and obligation.