As he states in a glorious passage in his prose essay of the Last Judgement: "Mental things are alone real: what is called corporeal nobody knows of; its dwelling-place is a fallacy, and its existence an imposture. Where is the existence out of mind, or thought? where is it but in the mind of a fool? Some people flatter themselves that there will be no Last Judgement, and that bad art will be adopted, and mixed with good art--that error or experiment will make a part of truth--and they boast that it is its foundation. These people flatter themselves; I will not flatter them. Error is created, truth is eternal. Error or creation will be burnt up, and then, and not till then, truth or eternity will appear. It is burned up the moment men cease to behold it." (This is a mystical utterance, a spiritual discernment which will repay thoughtful consideration. It gives the Last Judgement--hitherto conceived of by the orthodox as a terribly material and mundane affair--an imaginative and esoteric significance very grateful and welcome to the spiritually sensitive.) "I assert for myself, that I do not behold the outward creation, and that to me it is hindrance and not action. 'What!' it will be questioned, 'when the sun rises, do you not see a round disc of fire, somewhat like a guinea?' Oh! no! no! I see an innumerable company of the heavenly host, crying: 'Holy, holy, holy is the Lord God Almighty.' I question not my corporeal eye, any more than I would question a window concerning a sight. I look through it, and not with it." One of Blake's most beautiful conceptions of God is as the universal "Poetic Genius," and he was very fond of asserting that Art is Religion, which indeed it is when, like his own, it represents the forms of this world as the transparent media through which pulses the light of the universal Poetic Genius. Another belief of Blake's must be quoted before I leave this part of our subject: "Men are admitted into heaven, not because they have curbed and governed their passions, or have no passions, but because they have cultivated their understandings. The treasures of heaven are not negations of passion, but realities of intellect, from which all the passions emanate, uncurbed in their eternal glory.