My friend, and former student, and now teacher in Colorado, Florian Hild, was born in Germany and has just passed his citizenship examination. I congratulate him. He is now friend and citizen. This, from Mark Twain (1890), is for him: "We are called the nation of inventors. And we are. We could still claim that title and wear its loftiest honors if we had stopped with the first thing we ever invented, which was human liberty."