Why human being, so-called civilized human being, is so much harassed for these four things? We have got better intelligence. We shall be, rather, more comfortable without struggling for existence than the animals. But our struggle for existence is greater than their struggle of existence. What is this civilization? This is not civilization. Everyone wants peaceful, calm life.
Even those who are struggling so hard, big business magnate, still, at the weekend, they find out some secluded place, nice place, without trouble. That is the nature. That human nature should be like that, that "Why should we work so hard, simply for eating, sleeping, mating?" This is a wrong type of civilization. But at the modern age, the human society is so made that one has to work like ass, whole day and night, simply for satisfying these four necessities of life.