His way from east to west, nor wants a steed!
And here 's Protagoras sets wrongheads right,
Explains what virtue, vice, truth, falsehood mean,
Makes all we seemed to know prove ignorance
Yet knowledge also, since, on either side
Of any question, something is to say,
Nothing to 'stablish, all things to disturb!
And shall youth go and play at kottabos,
Leaving unsettled whether moon-spots breed?
Or dare keep Choes ere the problem 's solved—