The problem is that replacement of Quantum Mechanics by Quantum Field Theory is still very demanding.
In the coming days, I know there will be some reflecting on my time as mayor. Many of you will search to find what's behind my decision. It's simple. I have always believed that every person, especially public officials, must understand when it is time to move on. For me, that time is now.
I am more convinced than ever that a lively two party system is essential to our democracy.