Summary
This quote suggests that inner experience, referring to one's personal thoughts, emotions, and perceptions, is only one aspect contributing to human knowledge. It implies that there are additional external sources, such as observation, experimentation, and learning from others, that also play a significant role in acquiring knowledge. The quote emphasizes the importance of recognizing that relying solely on inner experience may limit our understanding of the world, and encourages us to explore diverse sources in order to gain a more well-rounded knowledge base.