"Ancilla to the Pre-Socratic Philosophers: A Complete Translation of the Fragments in Diels Fragmente Der Vorsokratiker", translated by Kathleen Freeman, Harvard University Press, (p. 161), 1948.
John Stuart Mill (1867). “Thoughts on parliamentary reform. Recent writers on reform. Bain's psychology. A few words on non-intervention. The contest in America. Austin on jurisprudence. Plato”, p.204