THE WHITE HOUSE WASHINGTON June 8, 2007 I send greetings to those celebrating Midwinter's Day on June 21, 2007. Since the signing of the Antarctic Treaty in 1959, men and women from around the world have ventured to Antarctica in the spirit of discovery and exploration. This bold calling continues to inspire individuals to pursue research in stations throughout Antarctica and further expand the horizons of human knowledge. Their work has changed the way we understand our world, and their dedication is helping us explore new frontiers in science and technology. I appreciate those in Antarctica who' have come together to take on the challenges and opportunities of this magnificent continent. Your efforts reflect the finest values of the human spirit --daring, discipline, ingenuity, and unity in the pursuit of great goals. Laura and I send our best wishes. George W. Bush