Whereas other species communicate through ritualized and repetitious songs, calls, or gestures, humans have developed linguistic systems that can express a literally infinite variety of separate and distinct thoughts.The main question is "How have they got this ability?" Though we should not forget mathematic as another special ability of human being, unfortunately, I could not assess it in this paper. The article is review of literature, which tries to answer the above-mentioned questions, raising some assumptions, which may encourage more curiosity and desire in the era of evolutionary psychology.It starts by reviewing some anatomical and physiological systems of brain, and examining activities and this terminology. For example, it is true that different activities of humans are divided between the two hemispheres of the brain, why do we call the work of one hemisphere dominant? Scientists believe that the center of language (receptive, verbal productive, expressive writing, and controlling the sensory motor of the other side of body) is in dominant hemisphere. They also say the centre for music, perception of intonation and prosody, and mathematics is in non-dominant hemisphere, and they exchange their information through corpus callousum and anterior and posterior commissure. Do you think domination is a proper term? There are a lot of doubts about the centre for music! Later on language acquisition will be explained: 1- language as a spandrel; 2- language as an adaptation; 3- language evolution. Chomsky’s theory will be discussed in more details. Discussion about similarities between music and verbal language is emphasized. It may emerges most probably music is older than verbal language. Evolution and Neo-Darwinism is another topic. By historical view, we see a mathematician in Greek and some in Egypt tried to show the language of nature is numerical, which only painters understood them after 1000 years and used it as perspective in their work. Considering Paige’s theory, the abstract thinking is the last level of development of intelligence, but looking at the dynamism of human creations it seems there must be some revision. Abnormal psychology is briefly explained.