Edmund Husserl is widely regarded as one of the most influential philosophers of the twentieth century. One of the founders of phenomenology, the Logical Investigations is his most famous work. Published in two volumes in 1 900 and 1901, it had a decisive impact on the direction of twentieth-century philosophy. It is one of the few works to have influenced philosophers as far apart as Frege and Heidegger and had a crucial impact on the development of both continental and analytical philosophy. This abridged edition of J.N. Findlay's translation makes the key sections of this classic work available in one volume for the first time. It has been specially edited and includes corrections to the Findlay translation and a new introduction by Dermot Moran, placing the Logical Investigations in historical context and bringing out its importance for contemporary philosophy.