Never forget posterity when devising a policy. Never think of posterity when making a speech.

Men of genius are not to be analysed by commonplace rules. The rest of us who have been or are leaders, more commonplace in our quality, will do well to remember two things. One is never to forget posterity when devising a policy. The other is never to think of posterity when making a speech.

When people meet my wife they think better of me. They say: "With a wife like that, he can't be as bad as we thought".

Thinking ahead, what really happens to us will depend on how many people we have who are of the great and sober and dynamic middle-class - the strivers, the planners, the ambitious ones.