Long is the road from the proposition I am to the declaration You are. Clearly, the declaration You are makes sense only if the I exists. How can the human I search out the secret of existence? In inner division and lostness, its first hesitant finding runs: I am not. When it braces itself and its risen sense of self prevails, it says: Only I am. Ripening into a social being, it now asserts: I am and other people are. When it gives thought to other living creatures as well, it asserts: I am and other people are and beings are. From here it is only one step to cosmic awareness: I am and other people are and other beings are and the world is. Then, when it reaches the boundary of nature, it supposes: I am and other people are and other beings are and the world is and the world beyond is… With the next step this takes shape within it as full vision: I am and other people are and other beings are and the world is and the world beyond is and God is. Hitherto the insights kept growing, from non-being to the full spectrum of being, while the last, mystical insight leaves aside every incidental factor and concentrates on the essence alone: God is.
This is how man comes to say You are… This is man's verb of being, the relative existence of the human being, that is, of dependent reality. But one important tenet of the secret teachings presents the logical order in reverse, and derives the existence of dependent reality from absolute reality.
Do you believe God unreal? You will become unreal yourself.
But if He exists for you, you yourself are existent too. (Taittiriya Upanishad 2.6.1)
With what meaning can man say: You are? Fear, dread, respect, awareness, wonder, reverence or love? Some see that in dread of Him the fire burns, in dread of Him the Sun shines, while others perceive the harmony in the universe, as by the divine will all things hold together and, through the working of the primary and secondary causes of creation, this cosmos comes into being. Those who meditate on the primeval source recognise the one they adore in the way that befits their own contemplation, and so it is not God who is manifold, but man's approach.
Man in himself can be understood only with difficulty, or not at all; human existence can be conceived only within a system of relations. In relation to something, in the company of someone, in dependence on someone, we are human. Man as dependent reality stands in a relative position, relative in both senses of the word, that is, his existence is not absolute existence, and he is best understood through his relations. That is why You are! is the system of belonging and the order of vocation for man who is not left to himself.
Can another reading exist? If man says it, he cries it out to the heavens, but what if God says it? Let there be light – and there was light, and likewise: Let there be man, and there was man, You are!
Who fashioned the form of man? Who his gross part and his name? Who his movement, and who his intelligence, and his many kinds of conduct? (12) Who gave man his in-breath, his out-breath, and from which god comes the life-breath that spreads through (his body)? (13) Which one god instilled in man the spirit of sacrifice? From whom is his truth, and from whom his falsehood? Whence his death, and whence his immortality? (14) Who clothes him (in a body)? Who sets the length of his life? Who gives him his strength, and who the swiftness of his feet? (15) (Atharva Veda X, hymn II – The Marvellous Composition of Man)
And the answer arrives too: ‘I make the man – the one I love – immeasurably mighty, I make him wise, a seer, a brahmin!’ (Rig Veda 10.125.5)