His work can be divided into four major categories -- Esotericism, Symbolism, Social Criticism and Religious exposition. Guénon was not one to destroy the edifices of a belief or doctrine without also expounding the real teaching of which it is a distortion or corruption. His works on the modern world are the most astringent, critical and biting critiques of our modern way of life that have ever been written. Crisis of the Modern World and the Reign of Quantity demolish the false structures that we have created in the name of progress and "supposed evolution" and show just how far modern man has moved away from the perennial tradition.