[“Know thyself”] and “re-stamp the currency”:[1] precepts of the Delphic oracle. That is, [respectively,] pay no attention to the opinion of the multitude and revalue not the truth but the accepted custom (Roth).
Roth, Catharine. “Know Thyself.” Suda On Line: Byzantine Lexicography. Edited by David Whitehead, University of Kentucky, 2002, archive.org. Accessed 17 September 2017.