Wisdom leads to unity, but ignorance to separation.
So long as God seems to be outside and far away, there is ignorance.
But when God is realised within, that is true knowledge.
One man may read the Bhagavata by the light of a lamp, and another may commit a forgery by that very light; but the lamp is unaffected. The sun sheds its light on the wicked as well as on the virtuous.
What Brahman is cannot be described. All things in the world — the Vedas, the Puranas, the Tantras, the six systems of philosophy — have been defiled, like food that has been touched by the tongue, for they have been read or uttered by the tongue. Only one thing has not been defiled in this way, and that is Brahman. No one has ever been able to say what Brahman is.
Common men talk bagfuls of religion but do not practise even a grain of it. The wise man speaks a little, even though his whole life is religion expressed in action.
The ordinary man says in his ignorance, "My religion is the sole religion, my religion is the best." But when his heart is illuminated by the true knowledge, he knows that beyond all the battles of sects and of sectaries presides the one, indivisible, eternal and omnipresent Benediction.
Imagine a limitless expanse of water: above and below, before and behind, right and left, everywhere there is water. In that water is placed a jar filled with water. There is water inside the jar and water outside, but the jar is still there. The 'I' is the jar.