This quote essentially suggests that when a person truly understands and engages with a topic, it becomes a part of them and is not easily forgotten or dismissed. It speaks to the depth of understanding and connection that can develop between a person and a subject matter. This is not about casual knowledge or superficial understanding, but about a deep, meaningful grasp of a subject that significantly impacts the person’s mind and thinking.

In the context of personal development, this quote implies that genuine and profound knowledge or skill acquisition is a transformative experience. It changes the way we see and interact with the world. For instance, once a person deeply understands the principles of empathy, they can’t easily ignore others’ feelings or perspectives. It becomes a part of their behavior and character.

In today’s world, this idea can be applied in various areas such as education, professional development, and even social issues. In education, it underscores the difference between rote learning and truly comprehending a subject. Students who simply memorize facts for exams may easily forget them afterwards. However, those who really understand the concepts can apply them in different contexts throughout their lives.

In professional development, it suggests that professionals who deeply understand their field are more likely to stay engaged and less likely to switch careers. They are also more likely to make significant contributions to their field.

Regarding social issues, once someone truly understands the complexities and impacts of issues like climate change or social injustice, they are more likely to remain committed to these causes and less likely to be swayed by temporary trends or superficial arguments.

In conclusion, this quote emphasizes the power and lasting impact of deep understanding and engagement with a subject. It’s a call to strive for such understanding in our pursuits, as it’s the kind of knowledge that sticks and truly makes a difference in our lives and the world.