Anarcharsis among the Scythians. A wise man amongst fools; “Good out of Nazareth”; “A Sir Sidney Smith on Salisbury Plain.” The opposite proverb is “Saul amongst the Prophets,” i.e. a fool amongst wise men. Anacharsis was a Scythian by birth, and the Scythians were proverbial for their uncultivated state and great ignorance.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894