Both his friends and his enemies have overstated the PM\u27s influence, according to DAVID BURCHELL IN Shakespeare’s day it was common to refer to the “seven ages of man” to describe the various paths our lives take over time. “One man in his time plays many parts” on the worldly stage, the bard reminded us. Modern politicians don’t have the benefit of this leisurely life-evolution. Generally their play has only three acts. There’s the one where they’re on the upswing; the one where they reach their apex; and the declining one. Every political life’s a little tragic drama, if you like. And very few choose the manner of their departure. The PM’s political life is no exception to t...