Alpha waves in the human brain are between 6 and 8 hertz. The wave frequency of the human cavity resonates between 6 and 8 hertz. All biological systems operate in the same frequency range. The human brain's alpha waves function in this range and the electrical resonance of the earth is between 6 and 8 hertz. Thus, our entire biological system - the brain and the earth itself - work on the same frequencies. If we can control that resonate system electronically, we can directly control the entire mental system of humankind.
In every idea of genius or in every new human idea, or, more simply still, in every serious human idea born in anyone's brain, there is something that cannot possibly be conveyed to others.
In order to explain why the ordinary Sadhus and Yogis take to tobacco and gānja [an intoxicant], I said that these cause stimulation of the physical brain. But these have reactions. And to stimulate the brain thus is not the proper process.
When I see an object there is no will; when its sensations are carried to the brain, there comes the reaction, which says "Do this", or "Do not do this", and this state of the ego-substance is what is called will
As human, we all have the same human potential, unless there is some sort of retarded brain function. The wonderful human brain is the source of our strength and the source of our future, provided we utilize it in the right direction. If we use the brilliant human mind in the wrong way, it is really a disaster.