"Books can be mirrors, windows, and sliding glass doors."

On morals: "The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil."

质量不是目标；它是一个旅程。

永远做你自己，展现自己，相信自己，不要去模仿别人的成功特质。

"A nation that destroys its soils destroys itself. Forests are the lungs of our land, purifying the air and giving fresh strength to our people."

宇宙的数学是用几何语言书写的。