to not exist; to be nonexistent

A modern Western philosophical movement centered on individual existence, freedom, and choice; key thinkers include Kierkegaard, Heidegger, and Sartre.

a person who follows or advocates for the philosophy of existentialism

the feeling of being noticed or acknowledged by others; a sense of existence

The sum total of the material living conditions of a society. This refers primarily to the mode of production of material goods, but also includes geographical environment and population factors. In Marxist theory, social being determines [[社会意识|社會意識|she4 hui4 yi4 shi2]].