Husserl lays out the philosophical problem of knowledge, indicates the requirements for its solution and introduces the phenomenological method of reduction. This text gives a glimpse into the epistemological motivation of his work and his concept of intentionality, and the formation of central phenomenological concepts that will later go by the names of transcendental consciousness and the noema, for example. The work includes a translator’s introduction that clearly spells out the structure, argument and movement of the text.