Prabhupada Letters :: 1968.

"So people might think you mad if they heard of your crazy work. So spiritual activities are like that. But Krishna can adjust opposing elements. By His inconceivable power, yes can be no, and no can be yes."

Prabhupada Letters :: 1971.

"You can live strictly and make advancement in Krishna Consciousness by chanting and reading the books. There is no question of your fall down. Chant sixteen rounds regularly and no power in all three worlds will make you fall down."