Speaker: Srila Prabhupada
Source: How To Derive The Ultimate Benefit

Just like earth, from the earth the tree grows. So tree grows means wood. Now, if you ignite the wood, first of all there is smoke, then there is fire. So my necessity is fire, neither the wood, nor the earth, nor the smoke. Similarly, for getting out of these material clutches one has to take shelter of Visnu — not of Lord Brahma nor Lord Siva.