Abstract

Man's interpretations of natural phenomena change and develop gradually in accordance with his knowledge of them and the accumulation of scientific data about them. In studying a subject, it is very important to understand the history of the development of the subject and the general state of theoretical thinking on the subject. By so doing, we can embrace the experience and knowledge secured by scholars in the past and broaden our vision in order to avoid tortuous paths. The author of this article will review biological theories and the history of their development as the beginning of our study of the histories of natural science and philosophy