Summary
This quote implies that we often learn about a subject or gain knowledge about it only after experiencing a significant event or crisis related to that subject. It suggests that true understanding sometimes comes from direct experience or personal encounters with the subject matter, rather than solely relying on theoretical or academic knowledge. In the case of geology, the quote suggests that we may not fully appreciate or comprehend the intricacies of the Earth's structure and geological processes until we witness the devastating effects of an earthquake.