Authors:

Either one does not dream, or one does so interestingly. One should learn to spend one's waking life in the same way: not at all, or interestingly.

Friedrich Nietzsche, Bernard Williams, Josefine Nauckhoff (2001). “Nietzsche: The Gay Science: With a Prelude in German Rhymes and an Appendix of Songs”, p.146, Cambridge University Press
Either one does not dream, or one does so interestingly. One should learn to spend one's waking life in the same way: not at all, or interestingly.