A priori

:This article is about the a priori in philosophy. You may be looking for information about a priori constructed languages.

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A priori is a Latin phrase meaning "from the former" or less literally "before experience". In much of the modern Western tradition, the term a priori is considered to mean propositional knowledge that can be had without, or "prior to", experience. It is usually contrasted with a posteriori knowledge meaning "after experience", which requires experience.

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For those within the mainstream of the tradition, mathematics and logic are generally considered a priori disciplines. Statements such as "2 + 2 = 4", for example, are considered to be "a priori", because they are thought to come out of reflection alone.

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The natural and social sciences are usually considered a posteriori disciplines. Statements like "The sky is usually mostly blue", for instance, might be considered "a posteriori" knowledge.

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Philosophy: Philosophy is a discipline or field of study involving the investigation, analysis, and development of ideas at a general, abstract, or fundamental level. It is the discipline in search for a general understanding of values and reality by chiefly speculative rather than observational means. The term...

Constructed languages: REDIRECT constructed language...

Latin: Latin is an Indo-European language originally spoken in the region around Rome called Latium. It gained great importance as the formal language of the Roman Empire. All Romance languages are descended from Latin, and many words based on Latin are found in other modern languages such as English. The ...