How the external energy of the Supreme Personality of Godhead works within this material world is explained in this verse. Everything is happening by the energy of the Supreme Lord. The atheistic philosophers, who do not agree to accept the Supreme Personality of Godhead as the original cause of creation, think that the material world moves by the action and reaction of different material elements. A simple example of the interaction of elements occurs when we mix soda and acid and the movement of effervescence is produced. But one cannot produce life by such interaction of chemicals. There are 8,400,000 different species of life, with different wishes and different actions. How the material force is working cannot be explained just on the basis of chemical reaction. A suitable example in this connection is that of the potter and the potters wheel. The potters wheel rotates, and several varieties of earthen pots come out. There are many causes for the earthen pots, but the original cause is the potter, who sets a force on the wheel. That force comes by his superintendence. The same idea is explained in Bhagavad-gitabehind all material action and reaction there is Krsna, the Supreme Personality of Godhead. Krsna says that everything depends on His energy, and yet He is not everywhere. The pot is produced under certain conditions of action and reaction of material energy, but the potter is not in the pot. In a similar way, the material creation is set up by the Lord, but He remains aloof. As stated in the Vedas, He simply glanced over it, and the agitation of matter immediately began.