The “mind” referred to in the kaTha Upanishad—when it declares that “by the mind alone is the Self attainable”—is not the ordinary mind we are familiar with. What we usually call the mind is entangled with name, form, and action. It knows objects by taking their shape, and therefore keeps changing along with them. This kind of ‘knowing’ is called vRtti-jnAna—knowledge through mental modifications.
A vRtti is simply a thought-wave, always in motion. The life-principle (prANa), being inert by itself, cannot function without the mind; and the mind, in turn, cannot operate without the light of Knowledge. Yet Knowledge itself never moves. It is ever steady. The movement we attribute to Knowing is therefore only an appearance, caused by the restless activity of the mind.
This leads to an important insight. Although the mind is the only available instrument for liberation, it cannot serve that purpose as long as it remains in constant motion. Continue reading