Who knoweth if to die be l>ut to live, And that called life l>y mortals be but death ? So too Empedocles ° : So to these mortal may not list nor look Nor yet conceive them in his mind and before that b : Each believes naught but his experience. And even Heraclitus : " Let us not conjecture on deepest questions what is likely." Then again Hippocrates showed himself two-sided and but human. And before them all Homer d : Pliant is the tongue of mortals ; numberless the tales within it and Ample is of words the pasture, hither thither widely ranging and And the saying which thou sayest, back it cometh later on thee, where he is speaking of the equal value of contradictory sayings. The Sceptics, then, were constantly engaged e in overthrowing the dogmas of all schools, but enuntiated none themselves ; and though they would go so far as to bring forward and expound the dogmas of the others, they themselves laid down nothing definitely, not even the laying down of nothing. So much so that they even refuted their laying down of nothing, saying, for instance, " We determine nothing." since otherwise they would have been betrayed into determining f ; but we put forward, say they, all