I have heard that man can acquire superhuman powers through it and perform miracles. I saw a man who had brought a ghost under control. The ghost use… - Ramakrishna

It is very pleasant to scratch an itching ring-worm, but the sensation one gets afterwards is very painful and intolerable. In the same way the pleasures of this world are very attractive in the beginning, but their consequences are terrible to contemplate and hard to endure. (548)

Knowledge leads to unity, but Ignorance to diversity. So long as God seems to be outside and far away, there is ignorance. But when God is realised within, that is true knowledge.

There are three kinds of devotees: superior, mediocre, and inferior. The inferior devotee says, "God is out there." According to him God is different from His creation. The mediocre devotee says: "God is the Antaryami, the Inner Guide. God dwells in everyone's heart." The mediocre devotee sees God in the heart. But the superior devotee sees that God alone has become everything; He alone has become the twenty-four cosmic principles. He finds that everything, above and below, is filled with God.