Being and Time Heidegger's "description of the world of phenomena" to be "fascinating, but maddeningly abstract". He suggests that much of "Being and Time" is a "description of a private spiritual journey" rather than genuine philosophy, and notes that Heidegger's assertions are unsupported by argument. Stephen Houlgate compares Heidegger's achievements in "Being and Time" to those of Kant in the "Critique of Pure Reason" (1781) and Hegel in "The Phenomenology of Spirit" (1807) and "Science of Logic" (1812-1816). Simon Critchley calls the work Heidegger's "magnum opus", and writes that it is impossible to understand developments in continental philosophy after Heidegger without understanding it.
Mario Costa (philosopher) the category of "flux", which his analysis considers both from a philosophical point of view and in its diverse aesthetic manifestations. Costa extended his reflection from the "cinematographic flux" to the present "technological aesthetic fluxes", made possible by the advent of digital technology and networks. He concluded that technological fluxes may also highlight essential aspects of contemporary ontology, being closely tied to our experience of time and existential attitude. Mario Costa (philosopher) Mario Costa (born 7 December 1936 in Torre del Greco) is an Italian philosopher. He is known for his studies of the consequences of new technology in art