If this definition of degeneracy be accepted, and its consequences admitted, the problem of the rise and fall of empires no longer presents any difficulty. A nation lives so long as it preserves the ethnical principle to which it owes its existence; with this principle, it loses the _primum mobile_ of its successes, its glory, and its civilization: it must therefore disappear from the stage of history. Who can doubt that if Alexander had been opposed by real Persians, the men of the Arian stock, whom Cyrus led to victory, the issue of the battle of Arbela would have been very different. Or if Rome, in her decadence, had possessed soldiers and senators like those of the time of Fabius, Scipio, and Cato, would she have fallen so easy a prey to the barbarians of the North? It will be objected that, even had the integrity of the original blood remained intact, a time must have come when they would find their masters. They would have succumbed under a series of well-combined attacks, a long-continued overwhelming pressure, or simply by the chances of a lost battle. The political edifice might have been destroyed in this manner, not the civilization, not the social organization. Invasion and defeat would have been reverses, sad ones, indeed, but not irremediable. There is no want of facts to confirm this assertion. In modern times, the Chinese have suffered two complete conquests. In each case they have imposed their manners and their institutions upon the conquerors; they have given them much, and received but little in return. The first invaders, after having undergone this change, were expelled; the same fate is now threatening the second.[59] In this case the vanquished were intellectually and numerically superior to their victors. I shall mention another case where the victors, though intellectually superior, are not possessed of sufficient numerical strength to transform the intellectual and moral character of the vanquished. The political supremacy of the British in Hindostan is perfect, yet they exert little or no moral influence over the masses they govern. All that the utmost exertion of their power can effect upon the fears of their subjects, is an outward compliance. The notions of the Hindoo cannot be replaced by European ideas--the spirit of Hindoo civilization cannot be conquered by any power, however great, of the law. Political forms may change, and do change, without materially affecting the basis upon which they rest; Hyderabad, Lahore, and Delhi may cease to be capitals: Hindoo society will subsist, nevertheless. A time must come, sooner or later, when India will regain a separate political existence, and publicly proclaim those laws of her own, which she now secretly obeys, or of which she is tacitly left in possession.