The core, the essence
The heart, the nub
The pivot, the point
The crux, the sumThe base, the nexus
The center, the eye
The Mecca, the hub
The root, the nucleiThe kernel, the gist
The omphalos, the locus
The centerpiece, the net
The cynosure, the focusThe origin of all that’s thought
The capital of what is wished
The bottom line to all of this
Is at the epicenter you are my pith