Metaphysical principles of genesis

ENWhen one faces such a profound problem as genesis it is always worth looking at its origins and at the first attempts at its solution. Since in Western Civilization the problem was formulated in Ancient Greek philosophy I will base my report on the works of Aristotle, the great encyclopedist of Ancient Greece. I will focus my attention on the first book of Physics by Aristotle in which the author analyses and solves the difficulties which Ancient Greek philosophy faced while trying to explain the genesis of the Universe. Therefore the first principle, the first efficient cause will remain outside of my considerations.