He added that the neocortex, which controls language and assimilates rational data, does not determine behavior, unlike the limbic part, hermetic language, which would be the receptacle of beliefs and values and push for action.
So I bought the book for details. Not a chance: I hardly found a single additional element, except the reference to a book Restak on the brain.
In short, a great and sincere congratulations to Sinek for his idea, but really well done for his book.
If you want to know how leaders inspire, rather reread "Long Walk To Freedom", in these days of celebration of the 92th birthday of Nelson Mandela.