In 1968, the editor of BACK TO GODHEAD suggested to Srila Prabhupada that BTG publish an article explaining point by point how to develop a spiritual world civilization. On October 17, 1968, Srila Prabhupada wrote the following reply.
Regarding your point program for a spiritual world civilization—it is a very nice suggestion. And practically our Krsna consciousness movement is built on this idea, that we want to make a world civilization on the basis of spiritual understanding. So I am giving you some points which you may expand or do it for understanding of the people in general. But the point should be as follows: first point, that any civilization devoid of God consciousness or Krsna consciousness is no civilization at all. It is simply a polished type of animal society. This is the first point. So at the present moment, the modern civilization on the basis of so-called scientific knowledge and economic development is trying to avoid God consciousness, or Krsna consciousness—that is the defect of the modern civilization. Therefore, in spite of all advancement it is zero. So zero has no value. And millions of zeroes put together does not make any value. But if one is put on the left side of the zero, it increases the value. Then one zero becomes ten, two zeros become 100, three zeros becomes 1,000, so it is very nice. This point should be clearly discussed, that without God consciousness, Krsna consciousness, any attempt of human civilization, so called philosophical or political or economical or labor, they are all zero.
The human society should be divided as a social order, they should be divided as the renounced order of life, retired order of life, householder, and student life.