According to Hayek, false individualism postulates the existence of isolated or self-contained individuals whereas the true one starts from men whose whole nature and character is determined by their existence in society. Apart from such form of false individualism as "constructivist rationalism" described by Hayek there exist various other forms of it, namely irrationalistic false individualism (which can be found in all versions of existentialism) and especially that form of false individualism which is a necessary consequence of post-modernism with its basic creed ANTHROPOS METRON PANTON.