"I began this race believing I should be a truth-teller on principle - ironically I have discovered that it is very popular - and the only way to avoid an election and win the next one is by being straight with people. No more unicorns, no more red lines, no more promises we can't deliver. That's how we get Brexit done, defeat Corbyn and unify the country."

"Is there not something even more sinister in people talking in abstract terms about Britain becoming part of this political union? People may have the impression that we, the 12 countries and perhaps …"

"The tolerant man has decided opinions, but recognises the process by which he reaches them, and keeps before himself the truth that they can only be profitably spread by repeating in the case of other…"

"There are people in this country who are the great destroyers; they wish to destroy the kind of free society we have. They wouldn't have the freedom and the kind of society they wish to impose on us. …"

"Fifty years ago Kurt Gödel... proved that the world of pure mathematics is inexhaustible. … I hope that the notion of a final statement of the laws of physics will prove as illusory as the notion of a…"