Yadubara: Has this happened before, the material wealth that we have now? Has it happened in past ages?
Prabhupāda: Yes.
Yadubara: Technological advancement, scientific?
Prabhupāda: All scientific. As this is winter season, so there will be a summer season. Anyone can say that after two months there will be summer season. Similarly, these ages are also, what is called, changing. So now it is Kali-yuga. After this Kali-yuga, there will be Satya-yuga. Cycle. So everything is happening. When there is winter season, everyone feels cold. So there is no question of asking. The particular type of age and its reaction of the quality of the nature, it will be there. So as there are many Kali-yugas, so it is to be understood that many times these things happened, and many times again will happen. Seasonal flowers, fruits. In the past, there were many times all those flowers and fruits, and in the future also they will appear. What is the difficulty to understand? But if in all these changing circumstances, if you become Kṛṣṇa conscious, then your position becomes transcendental. You are no more subjected to all this changing process. So that opportunity is in the human life. It doesn't matter whether he is in the Kali-yuga or Satya-yuga. Because he has got this human form of life, he must be Kṛṣṇa conscious. Then his problem is solved.