So this is a great science. People do not know how things are taking place, how there are so many species of life, how one is so-called happy, one so-called distressed. Why one is rich, one is poor. Why there are so many planets. Why some of them are demigods and some of them are human beings, some of them are animals. It is a great science. But there is no cultivation of this knowledge in the modern universities or educational institutions. Perhaps we are the only group of men, we are trying to propagate this science of Kṛṣṇa consciousness. But it is a perfect science to understand the position.
Now Kṛṣṇa says: catur varṇyaṁ mayā sṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13). Now the... When we are animals... We had to pass through animal bodies. By evolution, we have come to this human form of body. Now it is an opportunity to get out of this cycle of birth and death. This is our real problem. But people, because they have no education, poor fund of knowledge... There is no educational institution how transmigration of the soul takes place. They do not know. Big, big M.A., Ph.D's. But they do not know what is the actual position of the living entity. But that is the real problem. They do not know the real problem.
The real problem is... It is stated in the Bhagavad-gītā: janma-mṛtyu-jarā-vyādhi (BG 13.9), birth, death, old age and disease. This is real problem. Nobody wants to take birth. At least nobody wants to die. Birth and death. Wherever there is birth, there must be death. Anything which is born must die. So janma-mṛtyu. And old age. So long you live, you have to change your position. So one position is this old age. Just like we have become old. There are so many complaints. Jarā. And vyādhi. And when we become diseased. Everyone should become diseased. Everyone should become old. Everyone must die. This is the problem. Janma-mṛtyu-jarā-vyādhi duḥkha-doṣānudarśanam.