The ego is tireless in spreading itself, and what it spreads is its own fear dressed as conviction. A mind convinced of its separation will cross any distance to win agreement, because company in the belief feels like proof, and each new follower is handed the same guilt the teacher never healed, only doubled.
What one teaches, one strengthens in oneself. The zeal that travels sea and land is guilt seeking reinforcement, and it makes the taught more bound than the teacher because inherited fear carries no memory of a gentler choice. The only teaching that frees is the one the teacher has accepted first, for a mind can pass on only the peace it has actually let in.
Sea and land: the whole reach of the world the ego will travel to find agreement for its fear, the outer search that stands in for the inward change it avoids.
Proselyte: the mind newly enrolled in the belief in separation, the follower handed a borrowed guilt heavier than the one who gave it.