Persistence is key in mathematical research; many great results come from long struggles.
坚持是数学研究的关键,许多伟大的成果来自于长期的奋斗。
Every moment is a fresh beginning.
我不是商人,我就是生意本身。
变体:有七个原因决定了所有人类的行动:机遇、本性、强迫、习惯、理性、激情和欲望。
That is what learning is. You suddenly understand something you've understood all your life, but in a new way.