I can't tell you how many people would say to me as a teenager, 'Why don't you grow up and start thinking about getting a real job?'
I suggested that we had experience in helping other countries build their military forces, and we would be willing and happy to do the same for Afghanistan, together with the United States.
Crossrail is a prime example of infrastructure. It is a rather deadly word, but I think it is exciting stuff, the civil engineering which makes Britain tick - the bridges, tunnels, power and water networks, which bind us together.