imminently practical discipline, a practical field.

是一门迫切实用的学科一个实际领域
Its purpose is not simply contemplation,

它的目的不止是沉思
its purpose is not reflection alone: it is advice giving.

也不是单单表述而是提供建言
None of the people we will study this semester were cloistered

我们这学期研究的人物没有一个是
scholars detached from the world, although this is a very common

脱离世界的隐世学者
prejudice against political philosophy, that it is somehow uniquely

但政治哲学常被加以偏见被认为是
sort of "pie in the sky" and detached from the world.

一种独特的空中楼阁脱离了世界
But the great thinkers were very far from being just,

但伟大思想家
so to speak, detached intellectuals.

并不是隐世知识分子
Plato undertook three long and dangerous voyages

柏拉图三度冒险渡海至西西里岛
to Sicily in order to advise the King Dionysius.

只为向国王狄奥尼修斯献策
Aristotle famously was a tutor of Alexander the Great.

亚里士多德有指导亚历山大大帝的著名史实