No food, no clothes, no house and no knowledge of letters. But then he achieved all these and more with the help of his rationality and intelligence. This faculty and power is derived by him from his earlier action and supported by nature. The power of the Nature is stronger than the human faculty. One should take up his duty and act, keeping that power in upright view.
Pure vision helps a man to acquire pure knowledge and the pure knowledge can refine the pure vision.
These are totally interdependent. These are inseparable. Earlier actions may empower a man to think and comprehend but the proper or improper use of such power depends upon his knowledge. Only through knowledge, he can decide whether he should speak the truth or tell the lie, whether he should comfort someone or cause grief. Knowledge makes him realize that good deeds lead to good results and bad deeds entrain bad results.