The Basis of Morality by Part 3 Chapter 3 Page 20

On the other hand, Philosophy, in dealing with this, as with all other problems, endeavours to extract the true and ultimate cause of the given phaenomena from the disclosures which the nature itself of man yields, and which, freed as they must be from all mythical interpretation, from all religious dogmas, and transcendent hypostases, she requires to see confirmed by external or internal experience. Now, as our present task is a philosophical one, we must entirely disregard all solutions conditioned by any religion; and I have here touched on them merely in order to throw a stronger light on the magnitude of the difficulty.