http://www.koti.phnet.fi/elohim/theory_of_evolution3 One thing that has considerably affected people's conception of the world, during the last 150 years, is evolution which is assumed to have taken place from primitive shapes of lives towards more and more complex structures. Charles Darwin is regarded as the father of this theory and his book "The Origin of Species", which was published in 1859, is his most important work and deals with this matter. But what are we to think about this theory and its truthfulness? Is it really true or not? We are going to examine this matter in the coming lines, and to start with also look at the best evidences of the theory, such as the archaeopteryx, the evolution of the horse and other proof. Then we will move on to other sides of this theory. Perhaps, through this examination, you will see the theory of evolution in a different light.