But it is difficult enough to form an exact idea even of the “Nature” proper to another kind of man, although in this domain things specifically cognizable are causally ordered and unified in a communicable system. And it is quite impossible for us to penetrate completely a historical world-aspect of “becoming” formed by a soul that is quite differently constituted from our own. Here there must always be an intractable residue, greater or smaller in proportion to our historical instinct, physiognomic tact and knowledge of men. All the same, the solution of this very problem is the condition-precedent of all really deep understanding of the world. The historical environment of another is a part of his _essence_, and no such other can be understood without the knowledge of his time-sense, his destiny-idea and the style and degree of acuity of his inner life. In so far therefore as these things are not directly confessed, we have to extract them from the symbolism of the alien Culture. And as it is thus and only thus that we can approach the incomprehensible, the style of an alien Culture, and the great time-symbols belonging thereto acquire an immeasurable importance. As an example of these hitherto almost uncomprehended signs we may take the _clock_, a creation of highly developed Cultures that becomes more and more mysterious as one examines it. Classical man managed to do without the clock, and his abstention was more or less deliberate. To the Augustan period, and far beyond it, the time of day was estimated by the length of one’s shadow,[128] although sun-dials and water-clocks, designed in conformity with a strict time-reckoning and imposed by a deep sense of past and future, had been in regular use in both the older Cultures of Egypt and Babylonia.[129] Classical man’s existence— Euclidean, relationless, point-formed—was wholly contained in the instant. Nothing must remind him of past or future. For the true Classical, archæology did not exist, nor did its _spiritual inversion_, _astrology_. The Oracle and the Sibyl, like the Etruscan-Roman “haruspices” and “augurs,” did not foretell any distant future but merely gave indications on particular questions of immediate bearing. No time-reckoning entered intimately into everyday life (for the Olympiad sequence was a mere literary expedient) and what really matters is not the goodness or badness of a calendar but the questions: “who uses it?” and “does the life of the nation run by it?” In Classical cities nothing suggested duration, or old times or times to come—there was no pious preservation of ruins, no work conceived for the benefit of future generations; in them we do not find that durable[130] material was deliberately chosen. The Dorian Greek ignored the Mycenæan stone- technique and built in wood or clay, though Mycenæan and Egyptian work was before him and the country produced first-class building-stone. The Doric style is a timber style—even in Pausanias’s day some wooden