我们能体验到的最美丽的东西是神秘。它是所有真正艺术和科学的源泉。
我们都是行走的被遗忘的书的图书馆。
创新和技术将是解决我们面临的能源挑战的关键。
Sometimes the hardest thing and the right thing are the same.
The Internet is a powerful tool for education, but it is not a substitute for the teacher.
The only time I know that something is true is at the moment I discover it in the act of writing.