过去不是为了生活其中;它是一个结论的源泉,我们从中汲取以行动。
The past is not for living in; it is a well of conclusions from which we draw in order to act.
问题不在于存在问题。问题在于期望并非如此,并认为存在问题本身就是问题。
The beauty of physics lies in its ability to explain the complex with the simple.