So Kṛṣṇa answered, "Yes. You'll not be happy. Although you know that your son is eternal, he is not dying, he is changing his body . . . by theoretical knowledge or by understanding, you know it. But who is there in this world who will not cry when the son is dead? He will cry. But that crying is not crying like a layman. He knows that, 'My . . .' this is habitual. This is habitual."
That is explained in the Bhagavad-gītā: mātrā-sparśās tu kaunteya śītoṣṇa-sukha-duḥkha-dāḥ (BG 2.14). Just like we feel warm and we feel cold due to the skin. So that does not mean because we are . . . in the summer we feel warm, therefore we shall not go to the fire and cook our foodstuff. Everyone does his duty. That is tolerance. Even it is very warm in the kitchen and if it is summer season, perspiration, nobody, I mean to say, stay away from cooking. One has to do his duty. So Kṛṣṇa advised Arjuna that tāṁs titikṣasva bhārata: "My dear Arjuna, even there is some pain due to the miserable condition of this material world, so we have to tolerate that."
Just like a patient, he is suffering in so many symptoms of the disease. Doctor is giving him medicine. He is also being treated nicely, but his suffering is there. And then? What the patient will think? He has to tolerate, tolerate, because he knows that, "I am going to be cured very soon. The treatment is there, so let me suffer little."
Similarly, our aim should be how to get out of this miserable condition of this material existence. And we should prepare ourself for that purpose. And the best and easiest method is this Kṛṣṇa consciousness. You chant Hare Kṛṣṇa, dance in ecstasy, you become in the process of purification. You chant, you dance nicely, enjoy. Just see how nice and easiest process has been endowed to us by Lord Caitanya. He's teaching Himself. And immediately you can take part. If . . .
There is no prerequisite qualification. You haven't got to educate yourself. Just like if one studies Vedānta, he has to tax his brain so much, he has to learn Sanskrit, he has to learn the intricacies of logic and philosophy and so many things.