The three qualities of Prakriti, when Prakriti is thought of as away from Purusha, are in equilibrium, motionless, poised the one against the other, counter-balancing and neutralizing each other, so that Matter is called jada, unconscious, "dead".
But in the presence of Purusha all is changed. When Purusha is in propinquity to Matter, then there is a change in Matter--not outside, but in it.
Purusha acts on Prakriti by propinquity, says Vyasa. It comes near Prakriti, and Prakriti begins to live. The "coming near" is a figure of speech, an adaptation to our ideas of time and space, for we cannot posit "nearness" of that which is timeless and spaceless--Spirit.
By the word propinquity is indicated an influence exerted by Purusha on Prakriti, and this, where material objects are concerned, would be brought about by their propinquity. If a magnet be brought near to a piece of soft iron or an electrified body be brought near to a neutral one, certain changes are wrought in the soft iron or in the neutral body by that bringing near.
The propinquity of the magnet makes the soft iron a magnet; the qualities of the magnet are produced in it, it manifests poles, it attracts steel, it attracts or repels the end of an electric needle. In the presence of a postively electrified body the electricity in a neutral body is re-arranged, and the positive retreats while the negative gathers near the electrified body.
An internal change has occurred in both cases from the propinquity of another object. So with Purusha and Prakriti. Purusha does nothing, but from Purusha there comes out an influence, as in the case of the magnetic influence.
The three gunas, under this influence of Purusha, undergo a marvellous change. I do not know what words to use, in order not to make a mistake in putting it.
You cannot say that Prakriti absorbs the influence. You can hardly say that it reflects the Purusha. But the presence of Purusha brings about certain internal changes, causes a difference in the equilibrium of the
three gunas in Prakriti.
The three gunas were in a state of equilibrium. No guna was manifest. One guna was balanced against another. What happens when Purusha influences Prakriti?
The quality of awareness in Purusha is taken up by, or reflected in, the guna called Sattva-- rhythm, and it becomes cognition in Prakriti. The quality that we call life in Purusha is taken up by, or reflected, in the guna called Rajas--mobility, and it becomes force, energy, activity,in Prakriti.
The quality that we call immutability in Purusha is taken up by, or reflected, in the guna called Tamas--inertia, and shows itself out as will or desire in Prakriti. So that, in that balanced equilibrium of Prakriti, a change has taken place by the mere propinquity of, or presence of, the Purusha.
The Purusha has lost nothing, but at the same time a change has taken place in matter. Cognition has appeared in it. Activity, force, has appeared in it. Will or desire has appeared in it. With thischange in Prakriti another change occurs.