Logical positivists claim that the whole of human knowledge can be reduced to analytic and synthetic sentences, and this means that the only possible knowledge is provided by science. Metaphysics is thus meaningless, because its sentences do not comply with the rules set forth by logical analysis of language. What, then, is the philosopher’s job? The members of the Vienna Circle answer that his task is to clarify the concepts used within empirical and formal sciences, while analytic philosophers stress instead the importance of ordinary language’s analysis. But the outcome is in both cases clear: philosophy is linguistic analysis. Howeber, by reducing the whole of reality to empirical reality, logical positivists do metaphysics. We do not have the “elimination” of metaphysics, but just the proposal of an empiricist brand of metaphysics.