Yet if there is the slightest deviation, you will be as far from the Way as heaven is from earth. Dogen Zenji was always writing from two perspectives. What we call the Absolute and the Relative. We could call it the intrinsic and the experiential. Dogs bark, birds chirp, rivers flow.
Winter comes, spring comes, clouds form, rain falls.
Whether we know it or not we are all part of the Way. We are in the midst of it. That brings us to the relative or experiential point of view. Here we are seeing things with our every day rational thinking mind. If we look at this sentence from the experiential point of view then it is obvious that if we don't practice correctly, then we miss the point completely.