The most important thing in mathematics is to ask the right questions.
理解自然的基本力量对于理解宇宙至关重要。
Every day is a new beginning.
Believe that life is worth living, and your belief will help create the fact.
历史实际上不过是人类罪行、愚蠢和不幸的记录册。
For attractive lips, speak words of kindness.