Philosopher who promoted logical positivism, writing Language, Truth, and Logic in 1936 and The Problem of Knowledge in 1956.
He studied at Christ Church, Oxford, after winning a classics scholarship. He was a spy for MI6 during World War II.
He rejected atheism in his publication Language, Truth and Logic. He also wrote for Polemic with George Orwell from 1945 until 1947.
He was married to Dee Wells, who was 15 years younger than he was.
He was influenced by Voltaire.