Tell me, Hippocrates, you now wish to appraoch Protagoras and pay him tuition for your instruction, what do you expect to find in him and what do you intend to become?  Let us assume you were thinking of going to your namesake, Hippocrates of Cos, the Asclepiad, and of paying him tuition for your instruction--if someone asked you, "Tell me, Hippocrates, in what quality do you intend to pay Hippocrates tuition?  What would you answer?"  'I should say, in his quality as a physician.'--'And what then would you wish to become yourself?'--'A physician."

Plato's <U>Protagoras</U>, 311 B-C