物理学的美丽在于它能够用简单的原理解释复杂的事物。
Happiness is a state of mind, not a set of circumstances.
明白事理的人使自己适应世界;不明事理的人想使世界适应自己。所以,所有进步都要靠不明事理的人。
"I’m a very positive thinker, and I think that is what helps me the most in difficult moments."