在科学中，我们试图解释我们不理解的事物。在数学中，我们试图理解我们无法解释的事物。

I’m a great believer in solving hard problems by using a checklist. You need to get all the likely and unlikely answers before you; otherwise it’s easy to miss something important.

爱着的心才是真正活着的心。

The way we communicate with others and with ourselves ultimately determines the quality of our lives.

"Psychology must bridge the gap between thought and action."