“In order to be saved from the danger of spoiling the human form of life and being attached to unreal things, one must take warning of death at the age of fifty, if not earlier. The principle is that one should take it for granted that the death warning is already there, even prior to the attainment of fifty years of age, and thus at any stage of life one should prepare himself for a better next life. The system of the sanatana-dharma institution is so made that the follower is trained for the better next life without any chance that the human life will be spoiled.” (Shrila Prabhupada, Shrimad Bhagavatam, 2.1.16 Purport)