Diogenes of Apollonia was an ancient philosopher who believed air is source of everything else in this world. Moreover, the most famous figure of Diogenes was found holding lanterns, it was believed that he was in search of an honest man. Diogenes philosophy is mostly focused on making the audience aware about the cosmology and also, he puts his effort in synthesizing new discoveries with the ancient views about the earth. In addition to that, Diogenes also worked with the genre of psychology and physiology while he highlighted the fact that common sense of humans expresses itself as a form of exercise between air and a region of brain.