Definition & Meaning of "experience is (always) the best teacher"

What is the origin of the proverb "experience is the best teacher" and when to use it?

The origin of the proverb "experience is the best teacher" is deeply rooted in traditional wisdom across various cultures, and its exact source is unclear. It emphasizes that through personal involvement and firsthand encounters with challenges or situations, individuals learn lessons that cannot be fully taught through books or instruction. The proverb encourages people to value the lessons learned from their own experiences, as these lessons are often more memorable and impactful than those learned from others.