But not to protract the discourse further, in our anxiety to show the propensity of the Greeks to plagiarism in expressions and dogmas, allow us to adduce the express testimony of Hippias, the sophist of Elea, who discourses on the point in hand, and speaks thus: “Of these things some perchance are said by Orpheus, some briefly by Musæus; some in one place, others in other places; some by Hesiod, some by Homer, some by the rest of the poets; and some in prose compositions, some by Greeks, some by Barbarians. And I from all these, placing together the things of most importance and of kindred character, will make the present discourse new and varied.” And in order that we may see that philosophy and history, and even rhetoric, are not free of a like reproach, it is right to adduce a few instances from them. For Alcmæon of Crotona having said, “It is easier to guard against a man who is an enemy than a friend,” Sophocles wrote in the _Antigone_: “For what sore more grievous than a bad friend?” And Xenophon said: “No man can injure enemies in any other way than by appearing to be a friend.” And Euripides having said in _Telephus_: “Shall we Greeks be slaves to Barbarians?”-- Thrasymachus, in the oration for the Larissæans, says: “Shall we be slaves to Archelaus--Greeks to a Barbarian?” And Orpheus having said: “Water is the change for soul, and death for water; From water is earth, and what comes from earth is again water, And from that, soul, which changes the whole ether;” and Heraclitus, putting together the expressions from these lines, writes thus: “It is death for souls to become water, and death for water to become earth; and from earth comes water, and from water soul.” And Athamas the Pythagorean having said, “Thus was produced the beginning of the universe; and there are four roots--fire, water, air, earth: for from these is the origination of what is produced,”--Empedocles of Agrigentum wrote: “The four roots of all things first do thou hear-- Fire, water, earth, and ether’s boundless height: For of these all that was, is, shall be, comes.” And Plato having said, “Wherefore also the gods, knowing men, release sooner from life those they value most,” Menander wrote: “Whom the gods love, dies young.” And Euripides having written in the _Œnomaus_: “We judge of things obscure from what we see;” and in the _Phœnix_: “By signs the obscure is fairly grasped,”-- Hyperides says, “But we must investigate things unseen by learning from signs and probabilities.” And Isocrates having said, “We must conjecture the future by the past,” Andocides does not shrink from saying, “For we must make use of what has happened previously as signs in reference to what is to be.” Besides, Theognis having said: