Abstract
Classical philosophy considers that the metaphysical universe can be in posse and we can produce knowledge about it, but modern thinkers such as Kant and Comte while accepting metaphysics, think we can only access the understanding of the concrete world epistemologically. In the 1920s, members of the movement known as the Vienna School -later known as the “logical positivists”- opposed philosophy’s interest in metaphysics and limited its field of preoccupation with the logical analysis of scientific findings. In this study, we will try to evaluate the British thinker Ayer's original work, titled Language, Truth and Logic, which was written in 1936 and had a great influence in the world of philosophy, through its Turkish translation titled Din, Doğruluk ve Mantık. This work examines the views of Ayer, a representative of the logical positivism and verifiability theory, about the idea of verifiability and analytical/synthetic, moral, and metaphysical propositions holistically.