"You suddenly feel like being only a tiny part of a great network of intelligent minds."
ESP (Extra-sensory perception) is the ability to detect intelligent creatures around you, even if they are invisible or behind a wall.
Your ESP vision range is influenced by your [intelligence].
Eating a floating eye corpse will give you ESP temporarily.
Wearing an Amulet of ESP will give you permanent ESP.
"You are filled with desire to be just yourself from now on."