How does Augustine of Hippo reflect on human origin?

Augustine starts his confessions by admitting he does not know if he is living life or his death and thus questioning human origin. He starts describing his infancy and how he does not have an answer as to where he was before being born, but all Augustine knows is that once he was born, he was already a living creature: a soul and a body united. Augustine proceeds to describe infancy as a form of torture since babies cannot truly express their desires or needs, thus totally depending on someone else to take care of them. He considers that he was a sinner ever since this stage since he was making demands on everyone whenever he cried and thanked no one for giving him something when he needed it. From here, Augustine proceeds to clarify that God is the one in charge of uniting the being or the soul with the body and that as we grow older, these two are more attached to each other.