In plain words
When you know the principle of the Ātma, Ānanda is yours; not knowing the principle, torment is yours; the moment you know Brahman, you become Brahman yourself: what I tell you is simply what is so.
The lump of clay is one; the forms of pots are many; the gold is one; the ornaments are many; cow's milk is one; the forms of the cows are many; the Paramātma is one, dwelling in many bodies.
The clay is one, but the forms of the pots are different. Gold is one, but the ornaments take on various forms. The colours of the cows are different, but cow's milk is white in colour. The Ātma is one; yet in humanity it goes on manifesting as oneness in the form of diversity. The God who manifests within every being, as its inner presence, is one alone. He alone is the embodiment of Satya. He alone is the infinite Lord.
But though Satya is one, men of experience have gone on experiencing it as many. Ekaṃsat viprā bahudhā vadanti. Though the Satya that exists is one, they have gone on fashioning many forms and names for God, each according to his own feelings and his own experiences. No one can change the root foundation. Nor can they add to it. Today those who cannot understand the principle of God are many. Those who act as if they have understood are more numerous still. But no one at all, at any time, can understand divinity fully. Yato vācā nivartante aprāpya manasā saha. How can they describe the divinity and holiness that are beyond the mind and beyond speech? In what way can they picture it? God has gone on creating, free of cost, all the things that man needs. Earth, fire, air, water, sunlight. But from these materials, which God gave in His grace, the individual scientist has gone on creating many kinds of forms and names. But today this scientist is under the delusion that he is creating these materials. No individual can create any material.