I have a dream that one day every valley shall be exalted, and every hill and mountain shall be made low, the rough places will be made plain, and the crooked places will be made straight; "and t
The next thing that you need to understand as a principle is that when you introduce change,you need to do it extraordinarily carefully. 下一个你必须要去理解的事情是当你想要改变的时候需要格外仔细。 Now I often have joked that I sp
2:54 P.M. EDT THE PRESIDENT: Thank you all. Please be seated. Siéntese. Bienvenidos. Thank you for coming. Welcome to El Jardin de las Rosas. It's a great place to celebrate Cinco de Mayo. As a
PRESIDENT OBAMA: Hello, everybody. I just want to welcome Secretary General Rasmussen to the Oval Office. He and I had the opportunity to get to know each other at the NATO summit in Strasbourg, at wh
An evolutionary biologist at Purdue University named William Muir studied chickens. He was interested in productivity — I think it's something that concerns all of us — but it's easy to measure in c
