They do not know. Foolish people, they do not know. They are after material acquisition. They do not know this will be finished just with the finishing of the body. This is called illusion. For this body which will not go with me I am working so hard, day and night. But the spirit, as I am, I do not know wherefrom I have come, where I am going. Therefore we have to follow the direction of authoritative persons, scriptures, to mold our life how to work. That is called karma-yoga. Simply working is not karma-yoga. Karma-yoga means... It is described in the Bhagavad-gītā, yat karoṣi BG 9.27 . Whatever you are doing. Yat karoṣi yaj juhoṣi. Whatever you are sacrificing. Yad aśnāsi, whatever you are eating. Yad dadāsi, whatever you are giving in charity. Kuruṣva tad mad-arpaṇam, "give Me." "You want to give some charity, give Me," Kṛṣṇa says. But people will not give Kṛṣṇa. If the members of the Kṛṣṇa consciousness goes to some foundation, that "We are being doing this work. Give us some money." "No. Our money is meant for hospital and educational institution." And what you are producing? "Atom bomb. Oh, that is all right." This is going on.
So we are, by material advancement, we are just advancing the cause of illusion. That is all. We do not know. What we know? Therefore a person who begins a spiritual life in Kṛṣṇa consciousness, his asset will go with him. Never mind, in this body we may be little uncomfortable. A spiritually advanced man, or a person in Kṛṣṇa consciousness, is never in discomfort. We have already discussed this point. Yasmin sthito guruṇāpi duḥkhena na vicālyate yaṁ labdhvā cāparaṁ lābhaṁ manyate nādhikaṁ tataḥ BG 6.20-23 . When one attains perfection in Kṛṣṇa consciousness, he does not want anything more. Everything is complete. And the symptom will be seen that he's not disturbed even in the severest point of miserable condition.