可持续性是现代商业的基石，没有它，我们就像在沙地上建房。
Teaching is not about imparting everything, but about guiding at the right moment.
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
Every mathematical problem has a solution; you just need to find the right perspective.
我们不能选择自己的心。我们不能让自己想要对我们或对别人有益的东西。