对于劳动者来说，最大的幸福是有充足的物质享受。
The greatest happiness for the laborer consists in having an abundant supply of the necessaries of life.
If you're not failing, you're not trying hard enough.
All things are in a state of flux.
最好的矿藏往往出现在别人停止寻找的地方。
Tennis is a brutal sport. There is no place to hide out there.
The only way to learn mathematics is to do mathematics.