If it had been possible to build the Tower of Babel without climbing it, it would have been permitted.[Wenn es möglich gewesen wäre, den Turm von Babel zu erbauen, ohne ihn zu erklettern, es wäre erlaubt worden.]
Source:Dearest Father: Stories and Other Writings (Schocken Books, ed. 1954), Chapter 3. The Eight Octavo Notebooks, Page 74