Beware of the all-knowing

Whenever any one informs us that he has found a man who knows all the arts, and all things else that anybody knows, and every single thing with a higher degree of accuracy than any other man --whoever tells us this, I think that we can only imagine to be a simple creature who is likely to have been deceived by some wizard or actor whom he met, and whom he thought all-knowing, because he himself was unable to analyse the nature of knowledge and ignorance and imitation.  Plato.  The Republic.  Book 10.

Detail of a Mosaic found in the House of T Siminius Stephanus Pompeii 1st century CE photographed at the Museo Archaeologico Nazionale di Napoli in Naples, Italy.



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