The chief beauty about time is that you cannot waste it in advance. The next year, the next day, the next hour are lying ready for you, as perfect, as unspoiled, as if you had never wasted or misapplied a single moment in all your life. You can turn over a new leaf every hour if you choose.
计算机科学中的真正挑战不仅仅是建造更快的计算机，而是开发更聪明的算法。
Only if we understand, can we care. Only if we care, will we help. Only if we help, shall all be saved.
"The past is never dead. It's not even past."