有些人特别善于了解自己的知识极限，因为他们必须这样做。
"The soul becomes dyed with the color of its thoughts."
Life is too precious to waste on regrets.
创新不仅仅是技术的问题；它关乎我们思考和行动方式的改变。
I'm so high, I can hear heaven.
The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.