Page:Ideas of Good and Evil, Yeats, 1903.djvu/144

Ideas of Good and Evil. the Sun, where his personification of poetic genius labours at a furnace. I think there was certainly some reason why these men took so deep a pleasure in lights, that Shelley thought of with weariness and trouble. The Moon is the most changeable of symbols, and not merely because it is the symbol of change. As mistress of the waters she governs the life of instinct and the generation of things, for as Porphyry says, even 'the apparition of images' in the 'imagination' is through 'an excess of moisture'; and, as a cold and changeable fire set in the bare heavens, she governs alike chastity and the joyless idle drifting hither and thither of generated things. She may give God a body and have Gabriel to bear her messages, or she may come to men in their happy moments as she came to Endymion, or she may deny life and shoot her arrows; but because she only becomes beautiful in giving herself, and is no flying ideal, 134