ABSTRACT
The Logical Investigations developed out of Edmund Husser's studies of the origin of the fundamental concepts of mathematics and of questions of mathematical theory. He had become convinced that neither the traditional nor the new logic was adequate to explain the rational nature of deductive science, with its formal unity and symbolic method. Husser's point of departure had been the prevailing views that not only logic in general, but also the logic of the deductive sciences, must look to psychology for their philosophical elucidation. Husserl proposes that the thesis of psychologism be assumed for the sake of the argument, namely, that the essential bases of the logical precepts lie in pyschology, which is generally conceived as a factual science and hence as a science of experience. Husserl's own descriptive notice of the first part of the Logical Investigations is a helpful summary, and is worth quoting in full "The Prolegomena to Pure Logic.
