Existentialism represents a protest against the rationalism of traditional philosophy, against misleading notions of the bourgeois culture, and the dehumanizing values of industrial civilization. Since alienation, loneliness and self-estrangement constitute threats to human personality in the modern world, existential thought has viewed as its cardinal concerns a quest for subjective truth, a reaction against the 'negation of Being' and a perennial search for freedom. From the ancient Greek philosopher, Socrates, to the twentieth century French philosopher, Jean Paul Sartre, and other...