25. Now, therefore, O Ruler of thy creatures, what is the mode by which thou teachest souls those things which are still future? For thou hast taught thy prophets. How dost thou, to whom nothing is future, teach future things--or rather teach things present from the signs of things future? For what does not exist certainly cannot be taught. This way of thine is too far from my sight; it is too great for me, I cannot attain to it.(see note 436) But I shall be enabled by thee, when thou wilt grant it, O sweet Light of my secret eyes.