never cease to increase their common treasure of assured knowledge, confront philosophy, which, despite all efforts, has been utterly torn in shreds and whose practitioners understand one another less and less, with scarcely two heads to be found among them who agree. This damages the prestige of philosophy, and it is always making fresh starts, but these now seek, by rigorous limitation of scope and clear definition of method, to make philosophy “positive” in the sense of natural science, which