Not compassionate, only polite, we well trained
Our sincerity's rehearsed in stage, it's just a game

from Black Star – Thieves in the Night Lyrics on Rap Genius

Meaning

Circling back to the chorus, Mos explains how humans in general lack true compassion, possessing only politeness instead.

Sympathy for others is merely “rehearsed,” as insincere as the lines of a play.

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