她的演讲题目是《失败的好处和想象的重要性》（The Fringe Benefits of Failure, and the Importance of Imagination）。我读了一遍讲稿，觉得很好，很感染人。
President Faust, members of the Harvard Corporation and the Board of Overseers, members of the faculty, proud parents, and, above all, graduates.
The first thing I would like to say is 'thank you.' Not only has Harvard given me an extraordinary honour, but the weeks of fear and nausea I have endured at the thought of giving this commencement address have made me lose weight. A win-win situation! Now all I have to do is take deep breaths, squint at the red banners and convince myself that I am at the world's largest Gryffindor reunion.
Delivering a commencement address is a great responsibility; or so I thought until I cast my mind back to my own graduation. The commencement speaker that day was the distinguished British philosopher Baroness Mary Warnock. Reflecting on her speech has helped me enormously in writing this one, because it turns out that I can't remember a single word she said. This liberating discovery enables me to proceed without any fear that I might inadvertently influence you to abandon promising careers in business, the law or politics for the giddy delights of becoming a gay wizard.
You see? If all you remember in years to come is the 'gay wizard' joke, I've come out ahead of Baroness Mary Warnock. Achievable goals: the first step to self improvement.
Actually, I have wracked my mind and heart for what I ought to say to you today. I have asked myself what I wish I had known at my own graduation, and what important lessons I have learned in the 21 years that have expired between that day and this.
I have come up with two answers. On this wonderful day when we are gathered together to celebrate your academic success, I have decided to talk to you about the benefits of failure. And as you stand on the threshold of what is sometimes called 'real life', I want to extol the crucial importance of imagination.
These may seem quixotic or paradoxical choices, but please bear with me.
Looking back at the 21-year-old that I was at graduation, is a slightly uncomfortable experience for the 42-year-old that she has become. Half my lifetime ago, I was striking an uneasy balance between the ambition I had for myself, and what those closest to me expected of me.
I was convinced that the only thing I wanted to do, ever, was to write novels. However, my parents, both of whom came from impoverished backgrounds and neither of whom had been to college, took the view that my overactive imagination was an amusing personal quirk that would never pay a mortgage, or secure a pension. I know that the irony strikes with the force of a cartoon anvil, now.
So they hoped that I would take a vocational degree; I wanted to study English Literature. A compromise was reached that in retrospect satisfied nobody, and I went up to study Modern Languages. Hardly had my parents' car rounded the corner at the end of the road than I ditched German and scuttled off down the Classics corridor.
I cannot remember telling my parents that I was studying Classics; they might well have found out for the first time on graduation day. Of all the subjects on this planet, I think they would have been hard put to name one less useful than Greek mythology when it came to securing the keys to an executive bathroom.
I would like to make it clear, in parenthesis, that I do not blame my parents for their point of view. There is an expiry date on blaming your parents for steering you in the wrong direction; the moment you are old enough to take the wheel, responsibility lies with you. What is more, I cannot criticise my parents for hoping that I would never experience poverty. They had been poor themselves, and I have since been poor, and I quite agree with them that it is not an ennobling experience. Poverty entails fear, and stress, and sometimes depression; it means a thousand petty humiliations and hardships. Climbing out of poverty by your own efforts, that is indeed something on which to pride yourself, but poverty itself is romanticised only by fools.
A mere seven years after my graduation day, I had failed on an epic scale.
An exceptionally short-lived marriage had imploded, and I was jobless, a lone parent, and as poor as it is possible to be in modern Britain, without being homeless. The fears my parents had had for me, and that I had had for myself, had both come to pass, and by every usual standard, I was the biggest failure I knew.
That period of my life was a dark one. I had no idea how far the tunnel extended, and for a long time, any light at the end of it was a hope rather than a reality.
So why do I talk about the benefits of failure? Simply because failure meant a stripping away of the inessential. I stopped pretending to myself that I was anything other than what I was, and began to direct all my energy into finishing the only work that mattered to me.
Had I really succeeded at anything else, I might never have found the determination to succeed in the one arena I believed I truly belonged.
I was set free, because my greatest fear had already been realised, and I was still alive, and I still had a daughter whom I adored, and I had an old typewriter and a big idea. And so rock bottom became the solid foundation on which I rebuilt my life.
Failure gave me an inner security that I had never attained by passing examinations. Failure taught me things about myself that I could have learned no other way. I discovered that I had a strong will, and more discipline than I had suspected; I also found out that I had friends whose value was truly above rubies.
You will never truly know yourself, or the strength of your relationships, until both have been tested by adversity. Such knowledge is a true gift, for all that it is painfully won, and it has been worth more to me than any qualification I ever earned.
Should Harvard encourage its faculty to take on the world's worst inequities? Should Harvard students learn about the depth of global poverty ... the prevalence of world hunger ... the scarcity of clean water ...the girls kept out of school ... the children who die from diseases we can cure?
Should the world's most privileged people learn about the lives of the world's least privileged?
These are not rhetorical questions - you will answer with your policies.
When you consider what those of us here in this Yard have been given - in talent, privilege, and opportunity - there is almost no limit to what the world has a right to expect from us.
the fact that you are graduating from Harvard suggests that you are not very well-acquainted with failure. You might be driven by a fear of failure quite as much as a desire for success. Indeed, your conception of failure might not be too far from the average person's idea of success, so high have you already flown academically.
But how much more are you, Harvard graduates of 2008, likely to touch other people's lives? Your intelligence, your capacity for hard work, the education you have earned and received, give you unique status, and unique responsibilities....... That is your privilege, and your burden.
If you choose to use your status and influence to raise your voice on behalf of those who have no voice; if you choose to identify not only with the powerful, but with the powerless; if you retain the ability to imagine yourself into the lives of those who do not have your advantages, then it will not only be your proud families who celebrate your existence, but thousands and millions of people whose reality you have helped transform for the better.
We do not need magic to change the world, we carry all the power we need inside ourselves already: we have the power to imagine better.