Never invest in any idea you can't illustrate with a crayon.
一个数学家的真正价值在于他们留下的问题。
不要害怕失败，要害怕不去尝试。
科学是使复杂变得可理解的艺术。
The only way to get through life is to laugh your way through it. You either have to laugh or cry. I prefer to laugh. Crying gives me a headache.
The Greeks understood the mysterious power of the hidden side of things. They bequeathed to us one of the most beautiful words in our language—the word 'enthusiasm'—en theos—a god within.
Quality is remembered long after price is forgotten.
I'm the reason your president can't lead.