Zen teachers frequently talk about ‘the non dual dharma’, and we are all familiar with the standard dualities: mind/body, self/world, and so on.
Less attention is given to a very pervasive dualism: the container and the contained. So, our life occurs in time, the leaves fall from the tree in autumn, experience occurs in consciousness, and so forth.
For master Dogen, our lives do not exist in time, but in our lives, time exists. The container/contained duality is replaced by a sense of each thing being the full dynamic functioning of everything, The Whole Universe pivoting on each thing.