Just as ocean and wave are One Substance... Endless dimension consciousness (Universal Loving Presence) and localized consciousness (Universal Identity of Loving Presence) are also within the perspective of a body, One Substance.
Zazen helps us harmonize the antenna of the so-called self: physically, mentally, emotionally, and spiritually so that we can experience Reality without the chatter and static caused by thought emanating within our brain. We are actually a Universal Loving Presence that's beyond the brain. Isn't that what the word spirit or, in this context, soul means? Something that is beyond the physical construct that consciousness uses as a tool?
Once you as "authentic You," so-called "Get It," on more than a superficial or intellectual level... but rather a 360° panoramic flowing awareness level... beyond thinking mind... what the Greeks referred to as "Metanoia..." going beyond Mind... we have a real opportunity to live as Buddha... rather than as a petty and fickle bumpkin being clawing for crumbs from the dinner table of Universal existence. That's when there's usually a sustained shift into goodwill, kindness, and creative action that genuinely expands Love with L.O.V.E. (Lots of Voluntary Effort) instead of things that don't.
一We Are Buddha Nature Itself
Notes:
1) Buddha could be translated as a Universal Identity of Loving Presence.
2) The calligraphy in the post says "Kai Ha," (海波 ) which holds the meaning "both ocean and wave at the same moment."