Leadership means making tough decisions today that will benefit generations tomorrow.

The essence of mathematics lies in its freedom.

I’d tell men and women in their mid-twenties not to settle for a job or a profession or even a career. Seek a calling. Even if you don’t know what that means, seek it. If you’re following your calling, the fatigue will be easier to bear, the disappointments will be fuel, the highs will be like nothing you’ve ever felt.

We are all hostages of our own time.

人生中唯一真正的失败是不忠于自己所知道的最好的东西。

The worse a situation becomes, the less it takes to turn it around, the bigger the upside.