As a movement and a method, as a "first philosophy," phenomenology
owes its life to Edmund Husserl (1859–1938), a
German-Czech (Moravian) philosopher who started out as a mathematician
in the late nineteenth century and wrote a book on the philosophy of
mathematics, Philosophie der Arithmetik (1891; The Philosophy of Arithmetic).
His view was that there was a strict empiricism, but on being shown (by
the great German logician Gottlob Frege) that such an analysis could
not possibly succeed, Husserl shifted his ground and started to defend
the idea that the truths of arithmetic had a kind of necessity that
could not be accounted for by empiricism. Thus, one of the main themes
of his next book, Logische Untersuchungen (1913, 1921; The Logical Investigations),
was a protracted argument against "psychologism," the thesis that truth
is dependent on the human mind. Rather, Husserl argues that necessary
truths are not reducible to our psychology. Phenomenology was Husserl's
continuing and continuously revised effort to develop a method for
grounding necessary truth.
Given Husserl's beginnings in the rigorous field of mathematics, one must appreciate the temperament that he brought to his new discipline. By the end of the nineteenth century, a new perspectivism (or some would say a relativism) had come into philosophy. Friedrich Nietzsche, in particular, had argued that all knowledge is perspectival and that philosophy could not be reduced to a single perspective, that philosophy might be relative to a people, or to our particular species, or even to individual psychology. Husserl's contemporary Wilhelm Dilthey defended a milder but similar thesis, and the "sociology of knowledge" was just beginning its ascension. Against any such relativism, Husserl insisted on philosophy as a singular, rigorous science, and his phenomenology was to provide the key.
It is often debated whether phenomenology is a philosophy or a method, but it is both. As a "first philosophy," without presuppositions, it lays the basis for all further philosophical and scientific investigations. Husserl defines phenomenology as the scientific study of the essential structures of consciousness. By describing those structures, Husserl promises us, we can find certainty, which philosophy has always sought. To do that, Husserl describes a method—or rather, a series of continuously revised methods—for taking up a peculiarly phenomenological standpoint, "bracketing out" everything that is not essential, thereby understanding the basic rules or constitutive processes through which consciousness does its work of knowing the world.
Given Husserl's beginnings in the rigorous field of mathematics, one must appreciate the temperament that he brought to his new discipline. By the end of the nineteenth century, a new perspectivism (or some would say a relativism) had come into philosophy. Friedrich Nietzsche, in particular, had argued that all knowledge is perspectival and that philosophy could not be reduced to a single perspective, that philosophy might be relative to a people, or to our particular species, or even to individual psychology. Husserl's contemporary Wilhelm Dilthey defended a milder but similar thesis, and the "sociology of knowledge" was just beginning its ascension. Against any such relativism, Husserl insisted on philosophy as a singular, rigorous science, and his phenomenology was to provide the key.
It is often debated whether phenomenology is a philosophy or a method, but it is both. As a "first philosophy," without presuppositions, it lays the basis for all further philosophical and scientific investigations. Husserl defines phenomenology as the scientific study of the essential structures of consciousness. By describing those structures, Husserl promises us, we can find certainty, which philosophy has always sought. To do that, Husserl describes a method—or rather, a series of continuously revised methods—for taking up a peculiarly phenomenological standpoint, "bracketing out" everything that is not essential, thereby understanding the basic rules or constitutive processes through which consciousness does its work of knowing the world.