Yperen mind and body should not form a unity? Yes, but while the mind does not dwell body this unity is broken. It is so broken that we can reproach, welcome, questioning insult to sustain a dialogue with oneself. The mind is presented as a fish swimming to and fro, without any control on our side, as if it were an independent entity that manifests as ego. If we try to control it in a few seconds you will see that it becomes out of control, as the fish goes from one place to another in constant motion, while the body is here are very few periods of control. yComo is possible? While the body lives in a real space-time is here and now, the mind wanders through a space-time past or future. The past is a crude reproduction of what has been lived in a present that is past and we can not return.