Origin of Species®
The Origin of Species is an extended argument for the belief that species that are now living were not created independently by God, but evolved from other, past species through the Process of Natural Selection. While many objections can be raised, and some even appear very serious, there is a lot of positive evidence for the theory of natural selection, such as evidence found in the similarities between related but still very distinct organisms, such as humans and dolphins.
Similarities of this kind are difficult to explain on the belief that God created the dolphin and man independently, but easy to explain if it is believed that both descended from a common ancestor. Natural selection does not at all diminish the role of God in creating the world, but rather elegantly places his role at the beginning in creating life and then allowing it develop into the many forms of life which exist today.