I get the feeling a lot of politicians are there to help themselves financially, first and foremost.
I've had to take a lot of stick down the years but the one thing that really got to me was when someone questioned my integrity. It's the one thing that really grates with you.
I did think there were one or two referees who had a personal thing against me. It wasn't them versus Celtic - it was them against me! I just think they wanted to take me on.
I'm a better coach now than when I joined Celtic. The longer you stay in any job, the better you become. If you lose your drive, your enthusiasm, your imagination, that experience is no good.