There are three levels of knowledge and according to the scope of knowledge, there are differences in human behavior...
First level: When a person enters the first level of knowledge after acquiring some basic knowledges, he/she becomes arrogant and thinks that he/she knows or has learned everything.
Second level: When a person is able to understand something as soon as he/she knows it, it can be called the second level of knowledge. At this stage he/she becomes humble, and his/her curiosity grows for acquiring more knowledge.
Third level: When the complete knowledge comes on all matters and he/she enters the third or higher level of knowledge by easily acquiring the skill of understanding everything well, he/she easily realize his/her mistakes. Even after knowing a lot, he/she thinks or realize that he/she knows nothing.
We have to try to reach the higher level for acquiring knowledge.
-Collected
