Itachi is one of the wisest characters in naruto and it seems like one of the obly people who understands this world truly. Listen to what itachi thinks about "power".

Do you want to know an interesting fact about sharks? Listen to this.

In this conversation between obito and naruto, Obito tells naruto his views of reality and solitude. But is it true? After all solitude is something thing that scares us all. Are we alone in the end?

A wise person wouldn't fully blame others for whatever happened, Intstead they acknowledges the fault which led to something bad and itachi did that.

How hatake kakashi tried to convince sasuke to forget about revenge against his brother by telling him what he learned from his past experiences.

In his last moments, jiraiya recalls his life, his adventures and how his tale came to an end.

Listen to orochimaru's approach of "What is life" as he tells young itachi "what is the meaning of life?"

At the end of the day, no one can ignore the fact that uchiha itachi is of the wisest characters in the naruto series. Listen to itachi's perspective of reality and illusion.

Listen to what madara thinks of this "reality". Anime - Naruto Shippuden, Character - Uchiha Madara