As you get different types of body, your atmosphere, your activity, your knowledge—everything—becomes relative. So for a higher relative standard, better standard of life, better life, you can go to the higher planets. Similarly, lower. You can lower down also, according . . . relative, everything is relative. So that, everything depends on your present karma, work—how you are making up your next life. But these rascals, they do not know there is a next life, and they are doctor of philosophy. They are so rascal, and they are leading, doctor of science, doctor of philosophy. They do not believe in the next life. They do not know how it is being done, and still they are doctor of university. Hmm? Is there any doctor here? (laughter) Falsely proud. They have no knowledge.
Here is knowledge: rāja-vidyā, king of all knowledge. Rāja-vidyā raja . . . very confidential. If you want to get this knowledge, then you have to take to Kṛṣṇa consciousness. Otherwise, it is not possible. Just like a dog cannot get university education. That is not possible. He must get a human body. It is not possible, but anyone can understand a little, that this rāja-vidyā rāja-guhyaṁ, this knowledge, this spiritual knowledge, Kṛṣṇa knowledge, is most confidential and the king of all knowledge.