This study proposes a double thesis. The first concerns the Logische Untersuchungen itself. We will attempt to show that its statements about the nature of being are inconsistent and that this inconsis- tency is responsible for the failure of this work. The second con- cerns the Logische Untersuchungen's relation to the Ideen. The latter, we propose, is a response to the failure of the Logische Untersuchungen's ontology. It can thus be understood in terms of a shift in the ontology of the Logische Untersuchungen, a shift motivated by the attempt to overcome the contradictory assertions of the...