This is, as Senator Mathias told us, the 50th time that we the people have celebrated this historic occasion. When the first President, George Washington, placed his hand upon the Bible, he stood less than a single day's journey by horseback from raw, untamed wilderness. There were 4 million Americans in a union of 13 States. Today we are 60 times as many in a union of 50 States. We have lighted the world with our inventions, gone to the aid of mankind wherever in the world there was a cry for help, journeyed to the Moon and safely returned. So much has changed. And yet we stand together as we did two centuries ago.