Summary
This quote suggests that the worth or significance of a principle lies in its ability to provide explanations for various phenomena. In other words, a principle's value is measured by the range of events, situations, or ideas it can effectively clarify or make sense of. The broader the scope of explanations a principle can offer, the more valuable and applicable it becomes. This quote highlights the importance of principles that are comprehensive and flexible in their ability to elucidate different areas of knowledge or provide insight into a multitude of subjects.