1859 – 1938
Edmund Husserl (1859–1938) was a German philosopher who founded phenomenology, a method of philosophical inquiry focused on the structures of first-person conscious experience. Trained as a mathematician under Weierstrass and philosophically influenced by Brentano, he sought to establish philosophy as a rigorous science by returning to the things themselves as they appear to consciousness. His work laid the groundwork for existentialism, hermeneutics, and much of continental philosophy in the twentieth century.
Founded phenomenology as a systematic philosophical method and movement
Developed the concept of intentionality as the essential structure of all conscious acts
Introduced the phenomenological reduction (epoché) and eidetic variation as investigative tools
Established the notion of the lifeworld (Lebenswelt) as the pre-theoretical ground of all experience
Authored Logical Investigations, which critically engaged psychologism and influenced analytic philosophy
Reichenbach was not able to recognize the Weyl method as other than an equivalent account of empirical determination of the metric
claimThe hermeneutical experience of truth is not a blind acceptance of the authority of tradition
claimThe semantics of a formal system rich enough to contain elementary mathematics cannot be fully defined in terms of mathematical functions within that same system.