In the material world there is constant fight between maya & the living entity. Maya is very strong & we can fall a victim at her hand at any moment. The only means of protecting us from the attack of maya is to be fully Krishna Conscious. The proportion in which we fall back in Krishna Consciousness is filled up by the influence of maya. It is exactly like the proportion of negligence of our health is subsequently resulted in our falling ill. The person who is very careful about his health does not generally fall ill. Similarly a person who is always fixed up in Krishna Consciousness cannot be defeated by maya.
Letter to Jadurani, 26 October, 1967