"If somebody comes to Me, then he hasn't got to return back to this miserable condition of life, which is not only miserable but temporary." So we should understand that. Nature is so cruel. In America, President Kennedy, he was thought to be the most fortunate man, happy man, young man, was elected president, nice wife, children, honor all over the world (snaps finger) within a second, finished. Temporary. Now what is his condition? Where he is? If life is eternal, if living entity is eternal, where he has gone? What he is doing? Is he happy or he is distressed? Or he's born in America or China? Nobody can say.
But it is a fact that as living entity, he's eternal, he's existing. That is the beginning of Bhagavad-gītā philosophy. Na hanyate hanyamāne śarīre (BG 2.20). After destruction of this body the living entity is not destroyed. He is there. That we can understand. Just like in your childhood, you had a small body. That body is no more, but you are existing. So it is natural, when this body will not exist, I will exist in another body. It is not very difficult to understand.
So this theory that body is eternal . . . soul is eternal and body is temporary, that's a fact. Therefore this life, this present life, is meant for manufacturing the next body. That is Vedic knowledge. We are creating . . . just like a boy, he is studying very nicely. So he's creating next body, a very educated young body. By education he can get nice job, nice place, nice position. So he's creating his next body. Similarly, we are creating our next body according to our karma.