Quote by Albert Einstein
All our thoughts and concepts are called up by sense-experiences and have a meaning only in reference to these sense-experiences. On the other hand, however, they are products of the spontaneous activity of our minds they are thus in no wise logical consequences of the contents of these sense-experiences. If, therefore, we wish to grasp the essence of a complex of abstract notions we must for the one part investigate the mutual relationships between the concepts and the assertions made about them for the other, we must investigate how they are related to the experiences.
Summary
This quote suggests that our thoughts and concepts are influenced by our senses, as they are formed through our interaction with the world around us. However, our thoughts and concepts are not solely determined by these sense-experiences, but are also influenced by our internal mental processes. To understand complex abstract ideas, we need to examine the connections between concepts and the statements made about them, as well as understand how they relate to our personal experiences. In essence, this quote highlights the importance of both external and internal factors in shaping our understanding of abstract notions.