The only way to learn mathematics is to do mathematics.
The intelligent investor is a realist who sells to optimists and buys from pessimists.
我们需要世界上的思想多样性来面对新的挑战。
I believe in the long-term growth of the United States.
Children are the most honest critics; they will tell you exactly what they think.
Science is a journey, not a destination.
"Life is what happens when you're busy making other plans."
