He writes, "Their psychology contains many of the ingredients that, if also present in the progenitor of humans...must have allowed our ancestors to develop a moral sense. ... Both statements exhibit selfishness by de Waal's definition of having the "knowledge of what one stands to gain" (de Waal 650): you only act altruistically because you know it is to your benefit. ... De Waal shows us how to do so by explaining human nature in the terms of morality, altruism, and selfishness. ...

• Word Count: 952
• Approx Pages: 4
• Grade Level: Undergraduate

Unlike the theory of creation, which states that the complexity of life and different species can only be explained in terms of a supernatural creator or god who placed life on earth, the theory of evolution has a plethora of evidence proving it to be trueCreation?. ... In reiterating the definition of evolution, we are reminded that gradual changes in one life form's anatomy, cytology, embryology, or biochemistry could cause a new species to originate. ... The most intriguing similarities are those that have to do with behavior and psychology. ...

• Word Count: 2536
• Approx Pages: 10
• Grade Level: Undergraduate