A J Ayer
/ˌeɪ dʒeɪ ˈeə(r)/
/ˌeɪ dʒeɪ ˈer/
- Alfred Jules Ayer (1910-89) a British philosopher. His best-known work, Language, Truth and Logic (1936), develops the philosophy of 'logical positivism', the idea that a statement only has meaning if it can be proved to be true or false. He was made a knight in 1970.