活着是世界上最罕见的事情。大多数人只是存在，仅此而已。
"To live is the rarest thing in the world. Most people exist, that is all."
"Books are the quietest and most constant of friends."
The process of making a film is just as important as the final product.
自由是每个人做他想做的事情的自然能力，除非受到暴力或法律的禁止。
Facts do not speak for themselves. They speak for or against competing theories. Facts divorced from theories or visions are mere isolated curiosities.
Technology is just a tool. The real challenge is to use it wisely.
学习数学的最好方法就是做数学。