学习数学的唯一方法就是做数学。
The only way to learn mathematics is to do mathematics.
"The truth is rarely pure and never simple."
The habit of reading is the only enjoyment in which there is no alloy; it lasts when all other pleasures fade.
无论生活看起来多么艰难，总会有你可以去做，并且取得成功的事情。最重要的是你不能放弃。
"The profession of book writing makes horse racing seem like a solid, stable business."