我只是一个来自俄亥俄州阿克伦的小孩。
The only way to learn mathematics is to do mathematics.
"The best books are the ones that leave you a little different than when you started."
In science, we try to explain what we don't understand. In mathematics, we try to understand what we can't explain.
当心碌碌无为的生活。
No president who performs his duties faithfully and conscientiously can have any leisure.