学不博者，不能守约；志不笃者，不能力行。
学识不够渊博的人们，就无法能够得到其中的要领。志向如果不够坚定，这样就不能够努力践行。
If you think you saw a mouse， you did. And， if there is one， there are more.
为了知识本身而追求知识，对正义的近乎狂热的热爱，以及对个人独立的渴望——这些是犹太传统的特征，让我感谢命运让我属于它。
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
我不是那种会让对努力的热爱减少的人。
挑战是伪装的机会，用勇气和创造力去迎接它们。
There is no such joy in the tavern as upon the road thereto.
Sustainability is not just a trend, it's a responsibility.