The history of human thought recalls the swinging of a pendulum which takes centuries to swing. After a long period of slumber comes a moment of awakening. Then thought frees herself from the chains with which those interested--rulers, lawyers, clerics--have carefully enwound her. She shatters the chains. She subjects to severe criticism all that has been taught her, and lays bare the emptiness of the religious political, legal, and social prejudices amid which she has vegetated. She starts research in new paths, enriches our knowledge with new discoveries, creates new sciences. But the inveterate enemies of thought--the government, the lawgiver, and the priest--soon recover from their defeat. By degrees they gather together their scattered forces, and remodel their faith and their code of laws to adapt them to the new needs. Then, profiting by the servility of thought and of character, which they themselves have so effectually cultivated; profiting, too,...
If the empirical. philosophers have hitherto failed to prove the progress of moral conceptions (which may be inciple of evolution), the fault lies to a great extent with the speculative, i.e., the . nonscientific philosophers. They have so strongly denied the empirical origin of man's moral feelings; they have gone to such subtle reasoning in order to assign a supernatural origin to the moral sense; and they have spoken so much about "the destination of man," the "way of his existence," and "the aim of Nature," that a reaction against the mythological and metaphysical conceptions which had risen round this question was unavoidable. Moreover, the modern evolutionists, having established the presence in the animal world of a keen struggle for life among different species, could not accept such a brutal process, which entails so much suffering upon sentient beings, as the expression of a Supreme Being; and they consequently denied that any ethical principle could...