The man who has lost his instincts and does not recognize the obligation Nature has given him cannot hope for any corrective action on Nature’s part … - Adolf Hitler

By looking after his relatives' interests as he did, Napoleon furthermore displayed incredible weakness on the purely human level. When a man occupies such a position, he should eliminate all his family feeling. Napoleon, on the contrary, placed his brothers and sisters in posts of command, and retained them in these posts even after they'd given proofs of their incapability. All that was necessary was to throw out all these patently incompetent relatives. Instead of that, he wore himself out with sending his brothers and sisters, regularly every month, letters containing reprimands and warnings, urging them to do this and not to do that, thinking he could remedy their incompetence by promising them money, or by threatening not to give them any more. Such illogical behaviour can be explained only by the feeling Corsicans have for their families, a feeling in which they resemble the Scots. By thus giving expression to his family feeling, Napoleon introduced a disruptive principle into his life. Nepotism, in fact, is the most formidable protection imaginable : the protection of the ego. But wherever it has appeared in the life of a State — the monarchies are the best proof — it has resulted in weakening and decay. Reason : it puts an end to the principle of effort.
In this respect, Frederick the Great showed himself superior to Napoleon — Frederick who, at the most difficult moments of his life, and when he had to take the hardest decisions, never forgot that things are called upon to endure. In similar cases, Napoleon capitulated. It's therefore obvious that, to bring his life's work to a successful conclusion, Frederick the Great could always rely on sturdier collaborators than Napoleon could. When Napoleon set the interests of his family clique above all, Frederick the Great looked around him for men, and, at need, trained them himself.
Despite all Napoleon's genius, Frederick the Great was the most outstanding man of the eighteenth century. When seeking to find a

The stronger must dominate and not mate with the weaker, which would signify the sacrifice of its own higher nature. Only the born weakling can look upon this principle as cruel, and if he does so it is merely because he is of a feebler nature and narrower mind; for if such a law did not direct the process of evolution then the higher development of organic life would not be conceivable at all.

It is more difficult to undermine faith than knowledge, love succumbs to change less than to respect, hatred is more durable than aversion, and at all times the driving force of the most important changes in this world has been found less in a scientific knowledge animating the masses, but rather in a fanaticism dominating them and in a hysteria which drove them forward.