We can put our view briefly by saying that when the scientist has no more doubts, the philosopher will have none either; and that when the philosopher is completely satisfied, the scientist will agree with him. But since such an end is countless years ahead and may never arrive, it is perhaps better to say that the philosopher and the scientist are pursuing the same end, and that the task involves both the elaboration of proper conceptions and the investigation of the events of the universe by the aid of these conceptions.