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.
John Gray (philosopher) September 2011, he made six broadcasts: He presented a second sequence from November 2014, sharing his "Point of View" on: Other programmes include: John Gray (philosopher) John Nicholas Gray (born 17 April 1948) is an English political philosopher with interests in analytic philosophy and the history of ideas. He retired in 2008 as School Professor of European Thought at the London School of Economics and Political Science. Gray contributes regularly to "The Guardian", "The Times Literary Supplement" and the "New Statesman", where he is the lead book reviewer. He is an atheist. Gray has written several influential books, including ""