Speculative philosophy is an integral and comprehensive discipline which recognizes that the present human condition cannot be sustained by either science or religion. The piecemeal solutions of empirical science and technology, which have no measure, and simple reversions to the historic religions of the world, are illusory totalities. To think philosophy speculatively is to accept that we are no longer in a purely scientific age wherein theory follows practice. Equally, speculative philosophy resists the temptation to relinquish the life of the mind to blind faith and unreasoned belief. For the ancient Greeks the ultimate end of human life lay in theoretical contemplation. Modern life finds itself immersed in endless practical activity. Speculative philosophy confronts the contradictions of modernity which are infinitely more dangerous in the hope that it will become the primary engine in the history of philosophy for critical challenges to our dominant and destructive thought-systems.