This discourse was taught by the Rebbe on Shabbat of Sedra Naso, a few days after Shavuot, in 1966.  It provides a fascinating perspective on the relation between the Torah and Nature.  The essence of the Torah is the Ten Commandments, and the essence of Nature is the Ten Utterances with which G-d created the world (such as Let there be Light, Let there be a Firmament, etc). 

The creation of the universe in itself has a certain imbalance, which can lead to negative consequences.  The fact that the Jewish people keep the laws of the Torah gives a positive input to the universe creating harmony for all.