Franz Brentano's classic study Psychology from an Empirical Standpoint was the most important of Brentano's works to be published in his lifetime.A new introduction by Peter Simons places Brentano's work in the context of current philosophical thought. He is able to show how Brentano has emerged since the 1970s as a key figure in both contemporary European and Anglo-American traditions and crucial to any understanding the recent history of philosophy and psychology.