The beauty of mathematics is that it is so simple yet so powerful.
数学的美在于它如此简单却又如此强大。
我们淹没在信息中，却渴求知识。
The best way to lead is by example.
资本是死劳动，像吸血鬼一样，只有吮吸活劳动才有生命，吮吸的活劳动越多，它的生命就越旺盛。