Evolution is the process by which all living things develop from primitive organisms through changes occurring over billions of years, a process that includes all animals and plants. Exactly how evolution occurs is still a matter of debate but there are many different theories and that it occurs as a scientific fact. Biologists agree that all living things come through a long history of changes shaped by physical and chemical processes that are still taking place. It is possible that all organisms can be traced back to the origin of life from one-celled organisms. Therefore, biological fact is mutable. In the book “The Selfish Gene”, Darwin mentions that the commonest and most conspicuous acts of animal altruism are done by parents, especially mothers, toward their children. In Robert Wright’s ted talk, he also mentions about this kind of close relationship. Both of them talk about the connection between kinship and altruism. However, Robert Wright argues that the kind of altruism shown in the kinship is also one kind of selfish. It is just the way gene helps itself. In the book “The Selfish gene, “there is a chapter that questions why are people? The first person who develops a good theory to answer to this question is Darwin. In fact, Darwin explains that evolution occurs when a person has the qualities that allow humans to survive at the expense of other individuals. In addition, Darwin will therefore, pass them on, generation after generation, through his offspring. Everyone knows that Darwin’s theory of evolution, but Dawkins is intended to introduce a particular interpretation of the evolutionary process. Dawkins thinks that evolution should not be studied at the level of singular individuals or groups (selection of species) but at the level of genes. He also believes that there are two main characteristics of genes, manifested during the struggle for survival: selfishness and fake altruism, these mean how to increase the welfare of an en