没有什么比一个没有什么可失去的人更危险的了。
"No hay nada más peligroso que un hombre que no tiene nada que perder."
Even in abstraction, mathematics has profound real-world applications.
The greatest happiness is to despise what deserves to be despised.
"To live is the rarest thing in the world. Most people exist, that is all."
In coal, efficiency today defines existence tomorrow.