The greatest prosperity can exist only as the result of the greatest possible productivity of the men and machines of the establishment.

The only limits that exist are the ones you place on yourself.

我不是为了生活而唱歌，我是为了唱歌而生活。

A mathematician is a device for turning coffee into theorems.

The writer must be a voice for the voiceless.

如果农民不信任，最先进的技术也毫无用处。