“Observation on the body is the body’s observation.” He says that observation on the body is to go with this one of our own, he says. “It is the body’s observation not the observation of something else.” He says it's not about anything other than this. That is good. In order to practice, we borrow our own body and mind to practice. We don't practice with anything other than this own body and mind.
“Observation on the precise moment is that supreme having arrived.”
It is really important to see the state of your own self, isn't it? It is translated as standing highly or superior, but he is saying that it is important to really observe ourselves. That's all we need to do, isn't it? Because it is on this body that problems arise. Because problems arise on this body and mind of each of us. Problems have never occurred anywhere else in our lives. Whenever there is a problem, the problem is always on this self, it's not the state of other people's bodies. You are well aware of that. Although you know full well, it is pitiful that you cannot help but think that he bullied me or that the cause is somewhere else. That was what we all thought, this oneself thought, things like that. It's not what other people thought. He's an idiot for doing what he did, and that's just what you thought about what you saw, not what anyone else did. That' s the kind of thought that arises in your mind, and you see that person in a wrong way. The reason why you don't realize that you're seeing things the wrong way is because you're not paying attention to yourself. It is not body-observation. You cannot make it clear because you see it thinking as other people’s affairs.
“When body-observation appears, mental observation all does not arrive yet and does not appear.”
　That's right. When you see things, there are so many things in the room, but when you look at this, you don't see anything else. That's how it's made, the body and mind. When you try to listen to a sound, you lose sight of what you are looking at. That's fine, nothing wrong with that. In talking to a lot of people, when you decide to talk to that person, you have the ability to hear what only that person is saying. It is strange, you're supposed to be able to hear what other people are saying, but it hardly matters. When you see a lot of things, but when someone tells you that there's a beautiful flower blooming there, you can only see it as such. Everything else doesn't matter. That's how we live our daily lives, isn't it?
 “Thus” because of this, “body-observation is diamond-samadhi” We can live our lives in such a way that it doesn't move us in the slightest, and we can taste it. That’s what Diamond- samadhi means. It doesn’t mean a diamond is sitting there. Diamond, Unshakable certainty. No matter how much one tries to destroy it, it is so firmly established that it cannot be destroyed. Or it is called “suramgama-samadhi” “both of which are the observation that body is not pure.”
 Later, if you go a little further, Dogen Zenji also gave a proper explanation. Let me explain. He said, “In general, the principle of observing the bright star in the middle of night is expressed as the observation that the body is not pure.” He uses such difficult expressions. If you put that aside for a moment and look at the next part, you can understand it clearly. He says he's not talking about the comparison between purity and impurity, what it is to be impure.
“It is the observation that body is not pure.” The footnote at the bottom of the previous page says something like this. Sixth. "When an ordinary person sees his body as impure, he leaves the wrong thought.” When we went to school, we learned about this view of impurity, and the way the teachers taught it was that if there was a delicious treat here, we would become attached to eating it. At such times, we were taught to collect the dust on the shoji screens with our fingers and eat it. This practice of getting away from obsessing over things in this way was taught to us as the views of impurity. We, human beings, if we fall in love with a beautiful person, we should not be dragged away by lust or other things like that, so when we see a beautiful person, we should think that his or her body is full of shit. Then you will not be attached to it. That is how we learned this observation that the body is not pure.

I think that's what you heard in school, but Dogen Zenji's is totally different. He says that he is not talking about being pure or not pure. He is saying that. This is the important point here. From the beginning, we see this body as being impure, and we are taught to get rid of our attachment to things, money, and other things that attach to various things. That's how they generally teach this observation that the body is not pure. It seems easy to understand, but it is not the case here.  
“The principle of observing the bright star in the middle of night,” it is said midnight, but it could be at down. Shakyamuni saw the morning star. I wonder what time the morning star appear in the morning? It is before daybreak. The morning star is Venus. Venus is a star that stands out because it looks a little brighter and bigger to the naked eye than other stars. When seeing, there is no such a thing as seeing. There is no one coming out to see. It's just the morning star twinkling. There is no self-awareness. He says that is what is called “the observation that body is not pure.” When we read that, we can' t help but wonder where we see that the body is impure. There is no question of being pure or being impure, that's for sure. This is an important thing.
“It is not the critical comparison of purity and impurity.” The observation that the body is not pure is not the matter of relative point of view as is commonly thought being pure or being not pure. We call the lavatory Gofujho, a place being not pure. That is the cleanest place. It is not said being dirty, Otearai, the washroom. Gofujho. I wonder if it comes out of here. Don't you ever hear the word " Gofujho" used to describe the washroom? If the word "not clean" is written, does that mean it is dirty? No, it is not. It's not clean, and it' s not about being clean or dirty.
“This existing body is not pure. The real body is not pure.” Whenever this thing (body and mind of self) touches something, it changes as it touched. This one doesn’t have any color or shape or anything, when it touched the shape of a pine branch, it becomes like touching the shape of a pine branch. If it touches an orchid, it becomes like touching an orchid. Because this one has the body, this is what he is saying about. “This existing body is not pure.” When a sound arises TAP! (He hit the table) that's how it changes. TAP! This body (body and mind) changes as the sound happened. There is no one who doesn’t change, TAP! when this sound was done. When there was no sound, and when there was a sound, TAP! this one always changes.
In working in practice like this, This way of studying in practice, just to name a few more unusual ones, “when demons become buddha, they twirl the demon to defeat the demon and to become buddha. When buddhas become buddha, they twirl buddha to make buddha and to become buddha. When human beings become buddha they twirl human being, regulate the human being and to become buddha.” When I say this in the usual way, it means that no matter what the material is, you really practice with what you are now doing. There is no other way. When you are cleaning, what do you mean when you are really cleaning and getting clean? Is it just a matter of getting a part of it clean? What do you mean when you're using a single Japanese-style plane to plane off a wooden board and it becomes clean? Is it only the surface of this side of the board become clean? You can't plane a beautiful board in that way, can you? You should ask any carpenter and he will tell you. It's not like that when you plane a really beautiful board. It's always made that way so that your content is perfect with that thing. It's not about using other things. People who do calligraphy must be able to enrich their lives properly by writing like this with a brush, the way of their lives. If they cannot do that, it is not calligraphy. It is doodling. For those who play the piano, making a sound is their whole life, at that time. That's how they're evaluated. It's not just the sound that counts. The sound itself evaluates the person, the sound that comes out. That is how he plays. That's why when you see someone playing a real thing, you will be moved. In case of a violin, this part of the violin is not the only violin. (Make a gesture with the violin) The whole body becomes one violin and the sound comes out. That's how it is with everything. It doesn't matter what it is. After this, the washing comes up. Everyone, this may be a little bit easier for you to understand. Dogen Zenji washes his clothes, too. He washes what he wears.
We should get a thorough going over the way things should be that there is surely a way through in the twirling up.
This means that you should take up what you are doing now and learn that there is the true path of studying in it, he says like that.