My dear, , Srila Prabhupada reveals in his conversation with Dr. Singh the foolishness of our modern day civilization which is like a castle made of sand:

Dr. Singh. They are actually fighting against the laws of nature, but often they take pleasure in the struggle.
Srila Prabhupada. That pleasure is childish. Suppose a child builds a sand castle on the beach with great effort. He may take pleasure in it, but that is childish pleasure. That is not a grown man's pleasure. Materialistic men have created a standard of false happiness. They have created a gorgeous arrangement for a comfortable civilization, but it is all false because they cannot create a situation in which they will be able to enjoy it. At any moment, anyone can be kicked out by death, and all his enjoyment will be finished.

So let us not be misled by this modern day sand castle civilization.