That was Matthew Oakeshott's response to the Conservative leader's assertion that you couldn't get a cigarette paper between our policies.
Tony Greaves picked up a Guardian leader on the same subject: "You are right to suggest that David Cameron is a 'false friend' (Editorial, 21 September). His suggestion that the Liberal Democrats should join with the Tories to create a 'national movement' is as ridiculous as it is sinister-sounding. But it's a significant moment, because it suggests the Tories have given up hope of winning lots of Liberal Democrat seats at the general election, and are now frightened they won't win an overall majority." (Guardian letters)