As a theorist of modern physics, do you ever touch Newtonian Mechanics for the past few years? What do you think about it in the viewpoint of quantum theory (or some kind of modern physics)?

• 作为一个关注现代物理的理论物理学家，在过去的若干年里，你是否还接触过牛顿力学？从量子理论（或者其它类型的现代物理）的眼光下，你怎样看待牛顿力学？