The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality

The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality is a lengthy academic work concerning Darwinian theories. Excerpt: "The interesting problem which underlies Mr. Darwin's theories is the answer to the question: How did the different species of organic beings on the earth originate? We find ourselves in the midst of an endless variety of organic beings, animals and plants; we see ourselves, so far as regards the entire physical part of our being, in relationship with this organic world—especially with the organization and physical functions of the animal body. The organic individuals come and go. They originate by being begotten by and born of individuals of the same kind, or they spring up through the formation of germs and buds; and they produce in the same way new individuals, that resemble them in all essential characteristics. Like always begets like, so far as our observations go. But not only the individuals, but even the species to which they belong, must have originated at some definite period of time—and, indeed, as geology tells us, not all at once, but in a long series, which stretched through immeasurable epochs of the earth's history. Thus we come face to face with the question, already put, which we can now formulate more precisely: How did the first individuals of each organic species come into existence?"