In the lives of all great men, past and present, we find this tremendous power of concentration. Those are men of genius, you say. The science of Yoga tells us that we are all geniuses if we try hard to be.
The difference in this world between mind & mind is simply the fact of concentration. One, more concentrated than the other, gets more knowledge
You will have to concentrate your mind and turn it back upon itself.
The astronomer concentrates his mind through the telescope... and so on. If you want to study your own mind, it will be the same process.
No knowledge can be had of any science unless we can concentrate our minds upon the subject.
All knowledge that we have, either of the external or internal world, is obtained through only one method —by the concentration of the mind.
Tamas is typified as darkness or inactivity; Rajas is activity, expressed as attraction or repulsion; and Sattva is the equilibrium of the two. In every man there are these three forces. Sometimes Tamas prevails. We become lazy, we cannot move, we are inactive, bound down by certain ideas or by mere dullness. At other times activity prevails, and at still other times that calm balancing of both. Again, in different men, one of these forces is generally predominant. The characteristic of one man is inactivity, dullness and laziness; that of another, activity, power, manifestation of energy; and in still another we find the sweetness, calmness, and gentleness, which are due to the balancing of both action and inaction. So in all creation — in animals, plants, and men — we find the more or less typical manifestation of all these different forces.
According to the Sânkhya philosophy, nature is composed of three forces called, in Sanskrit, Sattva, Rajas, and Tamas. These as manifested in the physical world are what we may call equilibrium, activity, and inertness.
That society is the greatest, where the highest truths become practical.