"How, then, are you to go about nurturing faith in the Lotus Sutra? For if you try to practice the teachings of the sutra without faith, it would be like trying to enter a jeweled mountain without hands [to pick up its treasures], or like trying to make a thousand-mile journey without feet. The answer is simply to examine the proof that is close at hand, and thus to take hold of faith that is far off."
From Gosho "Letter to Horen" (The Writings of Nichiren Daishonin, page 511)