This quote, "The things we know best are the things we haven’t been taught," suggests that the most profound and deep-seated knowledge we possess often comes from personal experiences and self-discovery, rather than formal education or instruction. It emphasizes the value of experiential learning and the wisdom gained through living, observing, and reflecting, as opposed to just being taught.

The idea here is that while formal education provides a foundation of knowledge, the things we truly understand and know best are often those we learn outside of a traditional classroom setting. These may include our understanding of emotions, relationships, resilience, empathy, or even our personal strengths and weaknesses. These are not typically subjects taught in school, but are learned through personal experiences and introspection.

In today’s world, this quote could be seen as a call to value and prioritize experiential learning. In an era where information is readily available, it’s easy to rely heavily on external sources of knowledge. However, this quote reminds us that some of the most important learning comes from within and through our own experiences.

In terms of personal development, this quote could inspire an individual to take ownership of their own learning and growth. Rather than waiting for someone to teach them, individuals are encouraged to seek out experiences, reflect on them, and learn from them. This might involve stepping out of comfort zones, taking risks, or simply being more observant and reflective in daily life.

Moreover, it also highlights the importance of self-awareness and introspection. The "untaught" things we know best are often insights into our own character, behavior, and preferences. This self-knowledge is key for personal development, as it forms the basis for self-improvement and personal growth.