This philosopher argued that value statements that fail an empirical criterion of meaning have no truth value but maintain an "emotive meaning," which is part of his principle of verification.  
This philosopher argued that value statements that fail an empirical criterion of meaning have no truth value but maintain an "emotive meaning," which is part of his principle of verification.  In works like Metaphysics and Common Sense and The Problem of Knowledge he developed a reductionist system that admitted only sensory data.  He is best known for building on the work of Wittgenstein and the Vienna Circle in his first and most important book, 1936's Language, Truth and Logic.  FTP, name this British logical positivist.
This philosopher argued that value statements that fail an empirical criterion of meaning have no truth value but maintain an "emotive meaning," which is part of his principle of verification.  
Sir Alfred Jules Ayer