A philosopher is someone who is constantly concerned with *how* to live. In other words: what is the right way? Not because of authority, but because it is our inner truth.
And he shares and talks about that a lot?
Because he knows the world sucks, he is in tremendous pain, and he wants to be happy and have a better world.
Every man should be, in my opinion, a philosopher. Making his own life better and those of his loved ones and his community.
He does that through his mastery of conception of ideation, relying on his senses.