The reasons are legion. Relationships are rarely if ever the blissful marriage of two minds and hearts that Romanticism teaches us to expect; sex is invariably an area of tension and longing; creative endeavour is pretty much always painful, compromised and slow; any job – however appealing on paper – will be irksome in many of its details; children will always resent their parents, however well intentioned and kindly the adults may try to be. Politics is evidently a process of muddle and dispiriting compromise.

