P. 256. (6th perek). Even in this physical world, is possible to have a connection to Hashem, because the world is filled with Hashem's light, though it is not so easy to feel this light. The physical world can be best seen through the Torah. Beginning the 7th perek. If permissible things are being not done l'sheim shamayim (for the sake of Heaven), they are coming from the 'klipah nogah', which is between the three impure klipos (shells) and the level of kedusha (holiness). It is actually possible to drag kosher sustenance deep into the klipos by purely indulging in the physical.