Quote by H. A. Kramers
In the world of human thought generally, and in physical science particularly, the most important and fruitful concepts are those to which it is impossible to attach a well defined meaning.
Summary
This quote suggests that some of the most valuable and influential concepts in human thought and scientific discovery are those that defy clear and rigid definitions. These concepts are open to interpretation and allow for multiple perspectives and creative ideas. It implies that ambiguity and flexibility can stimulate innovation, encouraging individuals to explore new possibilities beyond the constraints of limited or precise definitions. It underscores the idea that the exploration of abstract and open-ended concepts often leads to groundbreaking discoveries and advancements in various fields of study.