There is a ticking time-bomb at the heart of our representative democracy and in more than fifty countries around the world. The problem is as large and widespread as it is serious. Politics is too often the enemy of government - at least; of good government.  We need proportional representation. We need to lower the voting age to 16. We need a written constitution. We need to separate the functions and powers of the executive, the legislature and the judiciary. In this typically provocative talk, A C Grayling will argue that democracy is for all, not some.