[Footnote 16: The highest education consists in the presentation and in the acceptance of the purest ideas and the highest ideals of all ages, whether they be presented in written or spoken words, in songs of voices or sounds of instruments, in plastic forms or glowing pictures, in humble lives or glorious actions. The well-educated man should be the product and the epitome of the best thoughts and sentiments the world has produced, for he carries the responsibility of past centuries.] Not to go back to the Quaternary period or to the cave dwellers, there are many of these mental ideas or conditions which would remain hidden from the inquiry of the historian if he were limited to written testimony. One example may suffice: the discoveries of Schliemann, at Troy, Mycenæ, and Tiryns have rescued from oblivion a primitive Greece of which the Greeks themselves had preserved but a faint remembrance. Thus has been given to the Homeric epoch a background of many centuries. Now this Greece, contemporary of the Thutmoses and the Ramses of Egypt, anterior to not only Grecian history but even to Grecian tradition, could not write, but could work and use stone; could hew wood and fashion it for carpentry; could mold and bake clay; could melt and hammer lead, bronze, gold, and silver; and could carve ivory. Every bit of material fashioned by the instruments of this period has the value of an authentic document. How society was constituted, the life that was led, what notions were held of the hereafter--all these things are revealed by the marks the hands of man have left upon everything he touched. The colossal walls of Tiryns, the majestic funeral cupolas of Mycenæ, the divisions of the royal abodes of which the outlines can still be traced on the surface of the soil, and the arrangement of the sepulchres hidden beneath it all testify. So, too, the weapons, the instruments, the vases, and the jewels which have been found scattered about amid the ruins of the buildings or buried in the tombs. Thanks to all these monuments, we are beginning to recognize in a shadow which year by year glows with a brighter light the features which characterized the world of Achæan heroes of which the image, transformed by oral tradition and singularly enlarged by power of invention, is reflected in the Iliad and the Odyssey.