A man may believe in all the churches in the world, he may carry in his head all the sacred books ever written, he may baptise himself in all the rivers of the earth, still, if he has no perception of God, I would class him with the rankest atheist. And a man may have never entered a church or a mosque, nor performed any ceremony, but if he feels God within himself and is thereby lifted above the vanities of the world, that man is a holy man, a saint, call him what you will.
Check out this quote.
