is to show you over and over and over again

就是要反复告诉你们
that starting with those one or two laws,

从其中的一两条定律出发
you can deduce everything,

你可以推导出一切
and I would encourage you to think the same way.

我鼓励你们用同样的方法来思考
In fact, I would encourage you to think the way physicists do,

其实即使你们不打算以后当物理学家
even if you don't plan to be a physicist,

我也希望你们能像物理学家一样思考
because that's the easiest way to do this subject,

因为这是学习这门课的捷径
and that is to follow the reasoning behind everything I give you.

也就是利用我给你的条件一步一步地推导
And my purpose will be not to

我的目的不是
say something as a postulate,

简单地告诉你们一个假说
but to show you where everything comes from,

而是给你们讲清楚这个理论的来龙去脉
and it's best for you if you try to follow the logic.

如果你们能理解推导过程那就再好不过