Nothing is funnier than unhappiness.
爱就是答案，这一点你很清楚。
Psychology must be a science of life, not just of the laboratory.
——〈在北京基督教等六教会欢迎会的演说〉，1912年9月5日
The study of black holes has led us to the edge of our understanding, where the known laws of physics break down and new theories must emerge.
"I never think about what could go wrong. I only focus on what I need to do right."
Challenges are opportunities in disguise; embrace them with courage.