I. Haeckel and His Opponents

For one who understands aright the monistic world-conception, all the objections urged against it from the side of ethics lose all significance. Haeckel has repeatedly pointed out the injustice of such objections, and also called attention to the fact that the assertion that scientific monism must needs lead to ethical materialism, either rests upon a complete misunderstanding of the former, or else aims at nothing more than casting suspicion upon it.