Sometimes you just have to take a leap of faith and believe in yourself.

Those who do not have power over the story that dominates their lives, the power to retell it, rethink it, deconstruct it, joke about it, and change it as they change, truly are powerless, because they cannot think new thoughts.

解决问题是在可能的解决方案空间中搜索。

A story is never finished; it’s only abandoned.

So given a Time Turner, I would tell my 21-year-old self that personal happiness lies in knowing that life is not a check-list of acquisition or achievement. Your qualifications, your CV, are not your life, though you will meet many people of my age and older who confuse the two. Life is difficult, and complicated, and beyond anyone’s total control, and the humility to know that will enable you to survive its vicissitudes.

我所做的远比以往所做的更好；我所去的安息远比以往所知的更好。

数学是所有科学建立的基础。

To be a Christian without prayer is no more possible than to be alive without breathing.