Characters
Face it, we don’t want anyone spelunking in our emotional cores. The echo would kill them.
— Ling ‧ Ally McBeal
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker insists, bluntly, that people prefer nobody probing their deepest feelings, because there is nothing there but hollow space. The joke is that an emotional interior might be so empty that any visitor would be undone by the echo. It's a wry, self-mocking evasion.
Context reviewed