"It is a capital mistake to theorize before one has data."

The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.

"The only way to do great work is to love what you do."

The greatest education in the world is watching the masters at work.

对认可的渴望，灵魂中的激情部分，是推动人类历史的力量。