In English
There is a small example for this. There is a vast ocean. Suppose you collect water from this ocean and bring it home. This water which you have collected directly from the ocean will taste salty. When the same ocean water is converted by the sun’s rays into vapour and then comes down as rain from the clouds an amount of sweetness will be added to the same water. The knowledge which we get by reading or listening to is to be compared to the water collected directly from the ocean. On the other hand, is comparable to the sweet water raining from the clouds.