The quote “Real knowledge is to know the extent of one’s ignorance” is by Confucius. The quote describes the worth of true knowledge and the wisdom is not just in acquiring knowledge but also to use it in a way that is beneficial in discovering and acknowledging one’s own weaknesses. It is also about the fact that knowledge helps in identifying one’s lack of knowledge, which is still not acquired.
The initial response was that the quote might be stating that knowledge can only be acquired through education, however on critically evaluating, knowledge is a factor that can be attained through many ways like education, experience, experiment and etc. secondly it might also seem that real knowledge is only to identify the boundaries of one’s ignorance but it goes much deeper to accept and take steps to eradicate one’s lack of knowledge.