施为欲似千钧弩，磨砺当如百炼金。
行动要果断有力，修养要不断磨练。
That neither our thoughts， nor passions， nor ideas formed by the imagination， exist without the mind， is what every body will allow.
The poverty of our century is unlike that of any other. It is not, as poverty was before, the result of natural scarcity, but of a set of priorities imposed upon the rest of the world by the rich.
In computer science, we often have to deal with systems that are too complex to understand all at once.