To turn to a more recent example, consider the splendid efflorescence of genius in Russia during the central years of the last century, still a vivifying influence on the literature and music of the world; yet the population of Russia had only just been delivered, nominally at least, from serfdom, and still remained at the intellectual and economic level of serfs. To-day, education has become diffused in the Western world. Yet no one would dream of asserting that genius is more prevalent. Consider the United States, for instance, during the past half-century. It would surely be hard to find any country, except Germany, where education is more highly esteemed or better understood, and where instruction is more widely diffused. Yet, so far as the production of high original genius is concerned, an old Italian city, like Florence, with a few thousand inhabitants, had far more to show than all the United States put together. So that we are at a loss how to apply the intellectual test to the measurement of civilisation. It would almost seem that the two essential elements of this test are mutually incompatible. Let us fall back on the simple solid fundamental test furnished by the material aspect of civilisation. Here we are among elementary facts and the first that began to be measured. Yet our difficulties, instead of diminishing, rather increase. It is here, too, that we chiefly meet with what Niceforo has called “the paradoxical symptoms of superiority in progress,” though I should prefer to call them ambivalent; that is to say, that, while from one point of view they indicate superiority, from another, even though some may call it a lower point of view, they appear to indicate inferiority. This is well illustrated by the test of growth of population, or the height of the birth-rate, better by the birth-rate considered in relation to the death-rate, for they cannot be intelligibly considered apart. The law of Nature is reproduction, and if an intellectual rabbit were able to study human civilisation he would undoubtedly regard rapidity of multiplication, in which he has himself attained so high a degree of proficiency, as evidence of progress in civilisation. In fact, as we know, there are even human beings who take the same view, whence we have what has been termed “Rabbitism” in men. Yet, if anything is clear in this obscure field, it is that the whole tendency of evolution is towards a diminishing birth-rate.[118] The most civilised countries everywhere, and the most civilised people in them, are those with the lowest birth-rate. Therefore, we have here to measure the height of civilisation by a test which, if carried to an extreme, would mean the disappearance of civilisation. Another such ambivalent test is the consumption of luxuries of which alcohol and tobacco are the types. There is held to be no surer test of civilisation than the increase per head of the consumption of alcohol and tobacco. Yet alcohol