
Alfred Jules Ayer
Sir Alfred Jules "Freddie" Ayer was an English philosopher who became professionally established through his exposition of major theses of logical positivism in Language, Truth, and Logic (1936). The work's dismissal of metaphysics, and endorsement of emotivism was the cause of much controversy and debate.
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Books

Logical Positivism
1978
ISBN 9780313204623
The Problem of Knowledge
1990
ISBN 9780140135473