人类精神的力量是无限的。
Leadership is about inspiring others to see possibilities where they once saw limits.
现在数学家面临的最大问题可能是黎曼假设。
What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.
用我们的教学方法，导师教得少，但却观察得多。
——在上海中国国民党本部会议演说，1920年11月9日