• Do there exist many worlds, or is there but a single world? This is one of the most noble and exalted questions in the study of Nature.

    Albertus Magnus: Do there exist many worlds, or is there but a single world? This is one of the most noble and exalted questions in the study of Nature.
    "Discovering the cosmos". Book by R.C. Bless, p. 686, 1996.