What is it, then?

那么这到底是什么
It is a knowledge of how to act where the purpose of action

这是一种可以将动作目的表达得
is acting well.

更好的一种知识
You might say it is less a body of true propositions than a shrewd

你可以说这比真实的本体更趋向于
sense of know-how or political savvy.

是一种精明的专项技能或是政治悟性
This kind of knowledge entails judgment and deliberation,

这类知识需要辨别力与我们称之为
the deliberative skill or the deliberative art.

协商技巧的能力
We only deliberate, Aristotle says, over things where

亚里士多德说只有事情有选择的
there is some choice.

时候我们才会协商
We deliberate with an eye to preservation or change,

我们协商是希望通过保留或改变
to making something better or to preserve it from becoming worse.

使得事情变得更好或者防止变得更坏
This kind of knowledge will be the art or craft of the statesman

这是一门政治家的艺术