no Socialist system is the only natural system, as some Socialists try to prove. Capitalism was natural under the conditions of the nineteenth century, just as feudalism was in the Middle Ages, and as Socialism will be in the coming age. The attempt to put forward a certain system as the only natural and permanent one is as futile as if we were to take an animal and say that this animal is the most perfect of all animals. Darwinism teaches us that every animal is equally adapted and equally perfect in form to suit its special environments, and Marxism teaches us that every social system is particularly adapted to its conditions, and that in this sense it may be called good and perfect.
Herein lies the main reason why the endeavor of the bourgeois Darwinists to defend the foundering capitalist system is bound to fail. Arguments based on natural science, when applied to social questions, must almost always lead to reverse conclusions. This happens because, while nature is very slow in its development and changes within the ken of human history are imperceptible, so that it may almost be regarded as stable, human society nevertheless undergoes quick and continuous changes. In order to understand the moving force and the cause of social development, we must study society as such. It is only here that we can find the reason of social development. Marxism and Darwinism should remain in their own domains; they are independent of each other and there is no direct connection between them.
Here arises a very important question. Can we stop at the conclusion that Marxism applies only to society and that Darwinism applies only to the organic world, and that neither of these theories is ap-
