‘You have to have different levels of political engagement. You have to win at different levels, the intellectual level, the battle of ideas level, you’ve got to win at this  level. And then you’ve got the next level down, that you’ve got to win on policy, and win the debate politically, and then politicians translate these ideas into their own language and then they have to be able to convey that message to the voters. These are two different roles, but they are also overlapping. Like Edmund Burke, one of the greatest conservative thinkers, was also an active politician.’