Instead of contemplating what will happen to this world – you have got a short duration of life, say fifty, sixty years – you should chant Hare Krishna and go back to home, back to Godhead. Don’t consider what will happen to this world. Nature will take care of it. Don’t puzzle your brain with these thoughts. You should utilize whatever time you have in your possession and go back to home, back to Godhead. You cannot check it. The best thing is that you mold your life and go back to home, back to Godhead. Oil your own machine, instead of thinking what will happen elsewhere. [Those things] will happen. Because people will go on with their rascal civilization, natural consequences will be there. Better you take advantage of whatever time you have got, become fully Krishna conscious and go back to home.

Srila Prabhupada, Morning Walk Conversation in Caracas. 21 February 1975.