"A writer's greatest tool is not the pen, but the ability to see the world through the eyes of others."

Your most unhappy customers are your greatest source of learning.

The propensity to truck， barter， and exchange one thing for another is common to all men， and to be found in no other race of animals.

There are no shortcuts in technology, only steady step-by-step progress.

"每一帧都是一幅画，而相机是你的画笔。"

The whites came to this land for a fresh start and to escape the tyranny of their masters, just as the freemen had fled theirs. But the ideals they held up for themselves, they denied others.