最好的老师是那种建议而不是教条化，并激发听众自我教学愿望的人。
The best teacher is the one who suggests rather than dogmatizes, and inspires his listener with the wish to teach himself.
The most valuable asset any company has is its people.
Minha pátria é a língua portuguesa.
数学是科学的钥匙和门。
Time is a concept that humans have created to make sense of the universe, but the universe itself is timeless.
A word after a word after a word is power.
永远不要让任何人告诉你你做不到某件事。