The world is before you, and you need not take it or leave it as it was when you came in.
A man who dares to waste one hour of time has not discovered the value of life.
生活的最好方式是热爱你所做的事。
计算理论不仅仅是关于解决问题,还涉及理解可计算性的极限。
Every tree we plant today is an investment in a greener, healthier tomorrow.