My greatest manager hired me for my potential, was always honest and open about everything, he was a great listener and great guy when giving feedback (0 ego). He was lacking empathy, obsessive at times but being open and seeing the goodwill in his every behavior was compensating all of his bad sides. One time he told me "I am not that smart, but at a young age, I have found a way to trick people that I am really smart" (he was Harvard grad with full scholar and worked with best names)

After many years I am still using things I have learned from him and those are saved my ass countless times.