One’s entire life is a continuous process of learning. Any process of inquiry is related to learning. But basically our inquiry should be concerned with finding out what is transient and what is permanent. This is true knowledge.
You may control a mad elephant; You may shut the mouth of the bear and the tiger; Ride the lion and play with the cobra; By alchemy you may earn your livelihood; You may wander through the universe incognito; Make vassals of the gods; be ever youthful; You may walk on water and live in fire; But control of the mind is better and more difficult.
The knowledge in your mind is immeasurably greater than all that you learnt, in all manner of ways, since birth, as a child, at school, in life, in the world, in your profession. This immeasurable knowledge sometimes percolates into the dream experience; sometimes it comes as intuitive ideas, as creative feelings.
Excessive attachment to sense pleasures leads to bondage, and detachment from sense pleasures leads to liberation; therefore it is the mind alone that is responsible for bondage or liberation.

