It is possible that in the 21st Century the Earth will not be inhabited by humans. One of the great mystics of… — Ram Dass Copy Share Image
Although when Christianity appeared the total population of the planet was only a fraction of that of the twentieth century, most of… — Kenneth Scott Latourette Copy Share Image
The most important fact of this century is not that Earth is threatened in many ways, It is that for the first… — William E. Burrows Copy Share Image
