Parāvareśo manasaiva viśvaṁ sṛjaty avati. Manasaiva, "simply by thinking." Just like in the Bible it is said, "Let there be creation." Immediately there is creation. Manasaiva. We can compare just a very rich man, many assistants, many managers. Just like, take, in your country, Rockefeller or somebody like that. He thinks something to do, business. Simply he orders his secretary, "This should be done," it is done. Without his personal effort, immediately done. Because why? Because he has got superior energy or power. In the material world...
Material world means this monetary strength he has got. So simply by his desire, the secretary arranges everything and everything is nicely done. But he is sitting in his room. If it is possible for a person who is little materially rich, just imagine how much it is possible by God, the Supreme. Simply by willing, everything will be done. He hasn't got to do anything. Na tasya kāryaṁ karaṇaṁ ca vidyate. Veda also.
Prabhupada's lecture - Śrīmad-Bhāgavatam 1.5.1-8 - New Vrindaban, May 23, 1969