Things in Past and Present in the Spirit of Man

When you consider the human being as he is today, you know that each one is very different from the other. The European man is different from the African, who is again very different from the Asiatic. You must recognize such differences. However, when we look at the whole of mankind, in spite of all the differences between then, we must admit that the human beings taken together, are much more similar than the animals, because even though we know that the European is entirely different from the African, nevertheless you cannot say that this is as strong a difference as, for example, between the stork and the mouse. Therefore you see that animals are differentiated to a much higher degree than are human beings. The animals are separated from each other by species, and as far as the human race is concerned, you can say that it is one single species. Thus when we sweep our glance over the animal kingdom on the Earth, we find the most manifold differentiations between them.