Only when the Lord opens his eyes in the form of sun or moon, the world is able to see. The first person to see is Lord and then we are the next one, we kind of get the remnants. After Lord has seen, then we are the secondaries of anything, This is knowledge. To know this is knowledge, is vidya.
The servants of the Lord are actually the servants of society. They are interested in imparting knowledge of the relationship of the living being with the Supreme Lord, the activities in that transcendental relationship and the ultimate goal of human life. That is the real knowledge which can help society achieve the real aim of human welfare.
Revealed Knowledge is given by the mercy of the Lord to the sincere souls.
Money is a type of wealth. But greater wealth than money is knowledge.
Theoretical knowledge is to understand what the goal is. We get realization of that knowledge only when we apply the understanding of that goal to every aspect of our life.
Knowledge will manifest as the realization comes. No need of becoming a pandit. Just as if we want to see the sun, we just need to open our eyes. The blind can't see the sun.