The ideal of a pure phenomenology will be perfected only by answering this question; pure phenomenology is to be separated sharply from psychology at large and, specifically, from the descriptive psychology of the phenomena of consciousness.

He broke with the positivist orientation of the science and philosophy of his day yet he elaborated critiques of historicism and of psychologism in logic. Edmund Gustav Albrecht Husserl (German: [ˈhʊsɐl]; April 8 1859 – April 26 1938) was a philosopher and mathematician and the founder of the 20th century philosophical school of phenomenology.