We must not fall into the trap of projecting our own morality onto the Soviet leaders. They do not share our aspirations, they are not constrained by our ethics, they always consider themselves exempt from the rules that bind other states.
As prime minister, I worked closely with Ronald Reagan for eight of the most important years of all our lives. We talked regularly both before and after his presidency. And I have had time and cause to reflect on what made him a great president.
I'm standing up for the right of self-determination. I'm standing up for our territory. I'm standing up for our people. I'm standing up for international law. I'm standing up for all those territories - those small territories and peoples the world over - who, if someone doesn't stand up and say to an invader 'enough, stop', would be at risk.
Every family should have the right to spend their money, after tax, as they wish, and not as the government dictates. Let us extend choice, extend the will to choose and the chance to choose.
I was turned out because I said to Europe no, no, no. That no, no , no has now turned into yes, yes. Two yes's not three because he got the Social Chapter out and he's reserved his position on the single currency.
Ought we not to ask the media to agree among themselves a voluntary code of conduct, under which they would not say or show anything which could assist the terrorists' morale or their cause while the hijack lasted.
Unless we change our ways and our direction, our greatness as a nation will soon be a footnote in the history books, a distant memory of an offshore island, lost in the mist of time like Camelot, remembered kindly for its noble past.
The habit of ubiquitous interventionism, combining pinprick strikes by precision weapons with pious invocations of high principle, would lead us into endless difficulties. Interventions must be limited in number and overwhelming in their impact.
The European single currency is bound to fail, economically, politically and indeed socially, though the timing, occasion and full consequences are all necessarily still unclear.
In the same period that the Americans have lived under one constitution our French friends notched up five. A Punch cartoon has a 19th century Englishman asking a librarian for a copy of the French constitution, only to be told: 'I am sorry Sir, we do not stock periodicals.'
It is always important in matters of high politics to know what you do not know. Those who think they know, but are mistaken, and act upon their mistakes, are the most dangerous people to have in charge.