Fitness See PHILOSOPHY OF BIOLOGY.

Five phases See WU-HSING.

Five Ways See AQUINAS.

Fludd Robert (1574–1637), English physician and writer. Influenced by Paracelsus, hermetism,...

Fluxion See CALCULUS.

Flying arrow paradox See ZENO'S PARADOXES.

Focal meaning See ARISTOTLE.

Fodor Jerry A. (b.1935), influential contemporary American philosopher of psychology, known...

Folk psychology in one sense, a putative network of principles constituting a...

Fonseca Pedro da (1528–99), Portuguese philosopher and logician. He entered the...

Fontenelle Bernard Le Bovier de (1657–1757), French writer who heralded the...

Foot Philippa (b.1920), British philosopher who exerted a lasting influence on...

Force, illocutionary See PHILOSOPHY OF LANGUAGE,. SPEECH ACT THEOR. forcing, a method...

Fordyce David (1711–51), Scottish philosopher and educational theorist whose writings were...

Foreknowledge, divine See DIVINE FOREKNOWL -. EDG. form, in metaphysics, especially Plato's...

Form of life See WITTGENSTEIN.

Form, aesthetic See AESTHETIC FORMALISM, AES -. THETIC.

Form, grammatical See LOGICAL FORM.

Form, logical See LOGICAL FORM.

Form, Platonic See FORM, PLATO.

Form, schematic See LOGICAL FORM.

Form, substantial See FORM, HYLOMORPHISM.

Formal cause See ARISTOTLE.

Formal distinction See FUNDAMENTUM DIVISIONIS.

Formal fallacy an invalid inference pattern that is described in terms of...

Formal justice See JUSTICE.

Formal language a language in which an expression's grammaticality and interpretation (if...

Formal learnability theory the study of human language learning through explicit formal models...

Formal logic the science of correct reasoning, going back to Aristotle's Prior...

Formal mode See METALANGUAGE.