Professor sanford explains that the need for physical safety must be met before city dwellers will be motivated to form close friendships with neighbors. professor sanford is providing an example of

the language of nature was a manifestation from god as he said "let there be light" and there was light the world began to assume visible, comprehensible form.

what ever we know now think of the old vision of creation we can be sure that with out the speaking of word -without language- we would have no science today with its striking power to illuminate the world.