"...And thou, Melkor shalt see that no theme may be played that has not its uttermost source in me... [Melkor] hath bethought him of bitter cold immoderate, and yet hath not destroyed the beauty of thy fountains or of thy clear pools..."

I love the bit where Ulmo says he never thought of snowflakes!

It's so hopeful. And so typically Tolkien that the bit that is most philosophical comes partly from Bombadil, who is so utterly odd and inexplicable!