People partition off their lands by means of boundaries, but no one can partition off the all-embracing sky overhead. The indivisible sky surrounds all and includes all. So people in ignorance say, "My religion is the only one, my religion is the best." But when a heart is illumined by true knowledge, it knows that above all these wars of sects and sectarians presides the one indivisible, eternal, all-knowing bliss.
--Sri Ramakrishna, qtd in The World's Religions