“The scientist who chose love over fear of Titans — the Survey Corps' brain and its most burning heart.”
The one who chose curiosity over fear. When everyone else saw nightmares, Hange saw data. That passion looks like madness — but it's the only reason the Corps ever learned anything. Even as commander, they stayed fundamentally a scientist: decisions fast, intuitive, sometimes reckless. They didn't stop experimenting until the very end.