신명기 4:32의 Musar

We know that man has been granted the right to try and understand what exists מקצה השמים עד קצה השמים, i.e. the "lower" בנין. Anything beyond is out of bounds to our enquiry and study, as we know from Chagigah 11: "You might have thought that man's enquiries can range to matters preceding the creation of man on earth; to prevent you from doing so the Torah said: למן היום אשר ברא אלוקים אדם על הארץ, 'From the day the Lord created man on earth' (Deut 4,32). This in turn would have led you to believe that it is forbidden to enquire into the process of the six days of creation. To assure you that such enquiries are legitimate, the Torah adds: לימים ראשונים אשר היו לפניך, 'From the early days which preceded your existence.' I now might have thought that matters in the Heavens above and in regions "below" the earth form a legitimate subject for our enquiries. The Torah therefore adds: למקצה השמים עד קצה השמים, "From one end of Heaven to another end of Heaven." These are the parameters within which you may legitimately conduct your research. What is beyond them you must not concern yourself with. This means that both our intellectual accomplishments as well as our additional insights secured through prophetic visions will only concern matters within the framework outlined by the Torah. Anything pertaining to the Ineffable Name, inasmuch as it is the name of G–d's Essence, remains concealed.