 These difficulties, however, are far from fatal to this aspect of Comte’s thought. Putting aside the fact that the idea of moral progress is slowly regaining some support, it is possible to interpret the three stages as forms of the mind that co-exist whose relative importance varies in time. This interpretation seems to be offered by Comte himself, who gives several examples of it in his history lessons. The germs of positivity were present from the beginning of the theological stage; with Descartes, the whole of natural philosophy reaches the positive stage, while moral philosophy remains in the metaphysical stage (1830 (58), v. 2, 714–715).