There is only one real sin, and that is to persuade oneself that the second-best is anything but the second-best.
The future belongs to those who can balance profitability with purpose.
The greatest weapon against stress is our ability to choose one thought over another.
It is wrong to have an ideal view of the world. That's where the mischief starts. That's where everything starts unravelling.
物理学和数学之间的界限并不像人们想象的那么清晰。
"To write a life is to give it a second chance."