No intelligent man believes that anybody ever willingly errs or willingly does base and evil deeds; they are well aware that all who do base and evil things do them unwillingly.

His death then may be assumed to have occurred circa 420. He immediately took him into his own household and taught him philosophy. Democritus discovered that Protagoras had tied the load himself with such perfect geometric accuracy that it revealed him to be a mathematic prodigy.

490 BC – 420 BC) was a pre-Socratic Greek philosopher and is numbered as one of the sophists by Plato. He is also believed to have created a major controversy during ancient times through his statement that "man is the measure of all things". Protagoras (pron.