This body is a product of this material nature. Now, however you can take care of this body, however you may go on making this body very strong and stout, still, you cannot maintain it. It will be finished today or tomorrow or a hundred years after. You cannot protect it. This is material nature. But I have got the tendency to keep my body fit, strong and eternal. That is my tendency. People are taking so much exercise just to become very strong and stout. But nature will not allow you. However stout and strong you may be, you have to die. You have to give up this body.
This body is temporary, but our tendency is to live forever. The scientists are trying how to keep this body fit. One Russian scientist said that, "By material science we shall be able to keep this body forever." They may say like that, but in the history we do not find any evidence that anyone has ever been able to keep this body forever, immortal. That is not possible.
But this tendency can be satisfied if you transfer yourself to the spiritual world. Because we are marginal. I have already said that we are in a marginal position. If we like, we can keep on this material side of the nature, and if we like, we can transfer ourself to the spiritual side of nature. And what we are? We are also spiritual spark. Therefore we cannot adjust with this material nature.
Our real hankering is how to go to the spiritual nature. But due to our long association with this material nature, we are thinking wrongly that, "I am a product of this material nature. I will have to adjust with the elements here, and . . . but because there is no other way, so as long is possible, let me live comfortably and satisfactorily." This is our nature.