"This twentieth century has been a period of terrific dynamism. Perhaps the last fifty years have seen more developments and more material progress than the previous five hundred years. Man has learned to control many of the scourges which once threatened him. He has learned to consume distance. He has learned to project his voice and his picture across oceans and continents. Lie has probed deep into the secrets of nature and learned how to make the desert bloom and the plants of the earth increase their bounty. He has learned how to release the immense forces locked in the smallest particles of matter."