This is a statement made by Mr. Lester Brown, the author of the book “The Global Economic Prospect.” Mr. Brown has in his mind the well known belief that the property which we inherit from our forefathers is ours and we can do whatever we like with it. So, he asks us to remember that the earth is not for us to use or abuse it as we like. It is something which we are duty-bound to preserve for the next generations. So, while we use the earth and its resources for our present needs, it is our duty to see that we do not compromise the ability of the future generations to meet their needs. It is therefore, very important that we do not strip the natural world of resources future generation would need. Even more important is the fact that we do not pollute these resources which make them useless or harmful.