Zen’s focus on posture is very helpful and very wise. Because it is getting to something we don’t know how to get to on our own. Until we sit down and take a shape we are not accustomed to, we will always take the shapes we are accustomed to. And as long as we take the shapes we are accustomed to, we will never see them. And so we have to take a different shape. Our ancestors and teachers are asking us to take a different shape. And in taking a different shape we see personas, we see mental postures.