每一次演出都是新的挑战，我喜欢这种挑战。

Life is like a cup of tea, it won't be bitter forever, but it will be bitter for a while.

现在数学家面临的最大问题可能是黎曼假设。

Randomized evaluations can help us understand what works and what doesn't in development.

在商业中，如果你不前进，你就在落后。