"But all these are modifications – forms of the formless. That formless will always remain unknown.

"How can you know the formless? Knowledge is possible only when there is a form. When something becomes visible, then you can know it. How can you make invisibility the object of knowledge? The very nature of invisibility is that it cannot be objectified. You cannot pinpoint where it is, what it is. Only something visible can become the object.

"So whenever anything is known, it will just be a modification of the unknown. The unknown remains unknown. It is unknowable. So it depends on you what you call it, and it depends on the utility you are going to put it to. For the yogi, electricity is not relevant. He is working in the inner lab of being. There, sound is more relevant, because through sound he can change many phenomena inside and through sound he can change the inner electricity also. Yogis call it prana – the inner bioenergy or bioelectricity. Through sound that can be changed immediately.

"That's why, when listening to classical music, you feel a certain silence surrounding you: your inner body energy is changed. Listen to a madman and you will feel you are also going crazy, because the madman is in a chaos of body electricity and his words and sounds carry that electricity to you. Sit with an enlightened person and suddenly you feel everything within you is falling in a rhythm, suddenly you feel a different quality of energy arising in you.

"That's why Patanjali says the repetition of om and meditation on it destroys all obstacles. What are the obstacles? Now he describes each obstacle, and how they can be destroyed by repeating the sound of om and meditating on it. We will have to ponder over it:

Disease, languor, doubt, carelessness, laziness, sensuality, delusion, impotency and instability are the obstacles that distract the mind.

"Take each – disease: For Patanjali, disease means dis-ease. It is a nonrhythmic way of your inner bioenergy. You feel uncomfortable. If this discomfort, this dis-ease, continues, sooner or later it will affect your body. Patanjali will agree with acupuncture absolutely, and in Russia a man named Kirlian will agree with Patanjali absolutely."