"Culture, when it loses its sacred sense, loses all sense. With the disappearance of the sacred, which imposed limits to the perfection which could be attained by the profane, arises one of the most dangerous illusions of our civilization—the illusion that there are no limits to the changes that human life can undergo, that society is 'in principle' an endlessly flexible thing, and that to deny this flexibility and this perfectibility is to deny man's total autonomy and thus to deny man himself."