not talk about how they think but about their behavior, lifestyle. You mean they were all like a men with normal thinking? If yes, we all are great philosophers! all these people live in a world of their own: in a world where no one confused them to think,to write, its philosophy; than in the real world where all most no one understand them.
People differ. Each create or join a (social) group according to his/her interests. So this is a usual thing and is not a striking feature only of philosophers named above. I also think, all people are talented (each in his/her way) and extraordinary... And are philosophers to a certain degree... The question is how to live a life realizing all the capabilities you have.

