Energy crisis. Energy crisis. So crisis must be there. Otherwise, if you live peacefully, even within so many crisis, war and fighting, we are thinking this world is very nice, in spite of all these difficulties. Especially in the Western countries, every ten years there is a war: First World War, Second World War. Before that, Hundred Years War, Seven Years War, Trafalgar's war, Waterloo war. War, war, war. There cannot be any peaceful life, because everyone is rogue and rascal, so there must be war. There must be punishment by nature.
As soon as there is overpopulation . . . that is Malthus' theory also, that as soon as there is overpopulation, there must be something disturbance—war, pestilence, epidemic, and finished, finished. The extra population, unnecessary. Varṇa-saṅkara. They are called varṇa-saṅkara. Varṇa-saṅkara . . . because by nature there must be brāhmaṇa, kṣatriya, vaiśya, śūdra, by nature. That should be organized. Head is head, tail is tail, not that head, tail, everything is one. That is called varṇa-saṅkara. Kṛṣṇa . . . Arjuna has argued that if the family members . . . if the woman becomes widow, then there will be varṇa-saṅkara population. Varṇa-saṅkara population means a population who cannot say who is his father. That is varṇa-saṅkara. Or who is caste does he belong, what is his father, what is his family. No, nothing, no information. That is called varṇa-saṅkara. So when the varṇa-saṅkara population increases, then the whole world becomes hell.