From the perspective of the self, the body and the world are within the mind. In a spiritual practice concerned with gain, even though we try to lever ourself into a different position, our head always gets stuck.
From the perspective of Buddhism, the mind is within the body. The body is within vast space. But if we do not make this vast space real, it is “Buddhism”, and we’re just back to the mind again.
When we closely examine our experience Now, isn’t that experience like space? Likewise the body; balanced in space, like a windchime. When we experience our breath Now isn’t it the dynamic interplay of space ‘outside’ and space ‘inside’? In all these cases, melding, intermingling. They are not the same, and not separate. When we sit down to practice, the space which we occupy doesn’t disappear. When we leave, the space does not reappear.
We carry it with us. And it us.