Boethius
(c. 477–524)
From The Consolation of Philosophy, Book III, Chapter IX.
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Source
Latin text from https://faculty.georgetown.edu/jod/boethius/jkok/3m9_t.htm. Translation by Victor Watts from Boethius (1999), The Conslation of Philosophy, transl. Victor Watts (London, Penguin Books), 66-7.