“In the Shruti-mantra it is said that only Vishnu, the Supreme Lord, existed before the creation, and there was no Brahma, Shiva or other demigods. Vishnu means the Maha-Vishnu, who is lying on the Causal Ocean. By His breathing only all the universes are generated in seeds and gradually develop into gigantic forms with innumerable planets within each and every universe. The seeds of universes develop into gigantic forms in the way seeds of a banyan tree develop into numberless banyan trees.” (Shrila Prabhupada, Shrimad Bhagavatam, 1.10.21 Purport)