The core idea of this root was:
From there, it shifted toward the broader sense of pursuit and eventually even further toward pursuit of knowledge.
Here’s a quick overview over English family members:
- to learn (pursue a trace to knowledge)
- lore (what is learned)
- to last (follow a track, stay on track -> remain)
- delirious (Originally “off track->crazy” in Latin)
The meaning of German leisten evolved from a sense of following directions, doing your work and then shifted a bit toward getting results.