Once when man was born naked and savage he was sustained by the bounties of nature. Then there was no question of discrimination, for all the animals, including man, equally shared the wealth of nature among themselves, and nature did not mind being exploited by them. But when man dissociated himself from the broader community of animals and built walls to keep nature away from his new home, he became ruthless in his exploitation of natural resources and in acquiring his economic prosperity at the expense of others.