The less he understands something, the more firmly he believes in it.

Her romances often seemed like dalliances; she enjoyed male company and blossomed in its presence, but she did not appear to care deeply about any of the men [Steiner]

Understanding how little we know is crucial to gaining knowledge.

In general, people accumulate knowledge gradually over a long period of time. However, there are extraordinary people all around us, who are capable of accumulating impressive amounts of knowledge within a relatively short period of time. Nevertheless, even the greatest genius possesses only a small fraction of all knowledge known by mankind. Finally, the following question arises: how large is all the existing knowledge in comparison to the space of ignorance?

Problems often become worse if incompetent people try to solve them.

Their leader had no real knowledge of warfare or tactics. I was only a stubborn man and that was my greatest advantage in this fight.