He is wise but wisest? No he top 10. He sometimes makes unwise decisions
He's the only one who has figured out how people can live together peacefully without having to compromise (like Hashirama). I would say it's probably (not in order): Naruto, Jiraiya, Hashirama, Minato, and Itachi. Then the next 5 would have Gaara, Hiruzen, Tobirama, Kakashi, and Shisui/Shikaku. I don't include Hagoromo; he's...strange. I kind of want to say that Bee could be seriously considered, but I just don't feel good about it for some reason. Maybe Chiyo could be considered too...And if that one nameless Shukaku jinchuriki can be counted, he's top 5 easily (probably 2nd tbh). Gaara is definitely #6. I almost put him in the top 5. I was just worried about the backlash I would get for it haha.