物理学和数学之间的界限并不像人们想象的那么清晰。
The boundary between physics and mathematics is not as clear-cut as one might think.
最成功的公司是那些将挑战视为创新和成长机会的公司。
与人相处，不能任性，要了解人情；行事也不能固执，要明白事理。
"The true measure of success is how you handle failure."
I want to leave a legacy that goes beyond tennis.
Don't let the noise of others' opinions drown out your own inner voice.
The idea of America is so important to me. It's about freedom, democracy, and the ability to create your own destiny.