The attempt at explaining the main spring of philosophical systems has been an interesting endeavour in philosophy. Until recently, it has been almost a commonplace in the subject to hold that philosophy starts either with the problem of nature, taken to imply objectivity, or of man, signifying subjectivity. That man himself is a combination of both or that nature includes man also has not been totally unknown, but in the question of laying emphasis, it has been laid either on the one or the other.