To understand a certain level of knowledge does not mean that we have attained it. To understand someone’s level of knowledge is to understand the words rather than the feelings of that person.
Those who understand someone’s level of knowledge can explain it in words, but this does not make us understand his mind, since words are not feelings.
Self-confidence is based on delusion because we are confused between understanding the level and reaching it. It is blindness that impedes men from evolving.
What should we do in order to evolve?
In order to evolve, we should know our own level and others’ level; that is, the true levels.
Once we are able to distinguish our level and theirs, we will discern our true knowledge and not take others’ knowledge as ours, which is false knowledge.
When we can discern false knowledge as false, we know our position and will reconsider our true knowledge and level. From there we can evolve.