领导力就是今天做出艰难的决定，以塑造更美好的明天。
Leadership is about making tough decisions today that will shape a better tomorrow.
The truth is rarely pure and never simple.
The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
The only way to deal with the pain of life is to embrace it.
A 1% improvement in efficiency could mean the difference between life and death.
