Given the importance of the subject, there isn’t much debate about the fundamentals of taxation. Fundamentalism, yes: on the right, the idea that all tax is theft and that any cut in tax rates will raise revenue; on the left, the idea that the country’s fiscal – and indeed social – problems could be solved quite simply if only the government had the courage to tax the rich more heavily.

(For context: the top 5 per cent of UK earners take in a quarter of the country’s income and pay almost half of all income tax; the top 1 per cent make 12.5 per cent of income, and pay over a quarter of all income tax. Make of that what you will.)

But fundamental principles, no. Instead, we have the increasingly frequent pageant of Budget day, in which the chancellor of the exchequer juggles statistics and pulls rabbits out of hats, while the media scrabble to explain who wins and loses from the performance.