Karl Jaspers summary

Phenomenology, a philosophical movement originating in the 20th century, the primary objective of which is the direct investigation and description of phenomena as consciously experienced, without theories about their causal explanation and as free as possible from unexamined preconceptions and

Existentialism, any of various philosophies, most influential in continental Europe from about 1930 to the mid-20th century, that have in common an interpretation of human existence in the world that stresses its concreteness and its problematic character. According to existentialism: (1) Existence

Political philosophy, branch of philosophy that is concerned, at the most abstract level, with the concepts and arguments involved in political opinion. The meaning of the term political is itself one of the major problems of political philosophy. Broadly, however, one may characterize as political