The beginning of human life and the whole mystery about it has fascinated people from time immemorial. It has been the subject of various scientific researches and religious debates. Different views on \"the beginning\" and distinct definitions are peculiar from individual to individual, in diverse countries, cultures, and religions. Substantial progress has been made so far that philosophers, scientists, ethicists, sociologists, and theologies are closer and closer to achieve some consensus, realizing that most of their views can be seen as complementary and do not exclude each other. Evaluating the process of development of human life, we can surely say that at some point there is the beginning and the end. Pointing out exact moments in time remains unascertained. Scientifically, from the biological standpoint, there are several moments which are more or less equally important and are rather seen as a continuous dynamic process that develops fluently.