“In questions of just and unjust, fair and foul, good and evil, which are the subjects of our present consultation, ought we to follow the opinion of the many and to fear them; or the opinion of the one man who has understanding? ought we not to fear and reverence him more than all the rest of the world: and if we desert him shall we not destroy and injure that principle in us which may be assumed to be improved by justice and deteriorated by injustice—there is such a principle?
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Plato. Crito (Kindle Locations 128-131). Kindle Edition. (Bold emphasis added.)
Socrates ... Ancient Greek: ... c. 470 – 399 BC[3][4]) was a Greek philosopher from Athens who is credited as one of the founders of Western philosophy, and as being the first moral philosopher[5][6] of the Western ethical tradition of thought.[7][8][9] An enigmatic figure, he authored no texts, and is known chiefly through the accounts of classical writers composing after his lifetime, particularly his students Plato and Xenophon. https://en.wikipedia.org/wiki/Socrates