‘When you see a speck of dust, it is not that you do not see the world of phenomena. When you realize the world of phenomena it is not that you do not realize a speck of dust. When buddhas realize the world of phenomena, they do not keep you from realization. Wholesomeness is manifest in the beginning, middle, and end.
Thus, realization is reality right now. Even shocks, doubts, fears and frights are none other than reality right now. However, with buddha knowledge it is different; seeing a speck of dust is different from sitting within a speck of dust. Even when you sit in the world of phenomena, it is not broad. Even when you sit in a speck of dust, it is not narrow. If you are fully present, you are free of how large or narrow it is where you are.’ (Shobogenzo Hokke Ten Hokke)
If you are confused, I think this passage (and, let’s face it, all of Dogen – as when I was typing this out, phrases from the Fukanzazengi came to mind) can be boiled down to these four words: realization is reality right now.