Philisophical lip service
A person giving "philisophical lip service" is someone who elaborates about specific ways, principles and ideals that one should live by, but they themselves do not implement these beliefs in their own lives.
One person in a crowd that will use "philisophical lip service" to control the conversation by insisting that their beliefs are the ways to live by. They do not take others' opinions and ideas into consideration, shutting down any input by others, however they themselves do not practice in their own lives what they preach. In essence, a hypocrite who is a self centered egotistical, self rightous asshole