If you have been brought up with attacking and trying to get to number two, number three, number four goal, not getting one goal and defend, if that's sort of the mentality that's engraved in you, it's really difficult to do the other thing.

Even when I went to Aston Villa, it was very important that I was not in competition with Manchester United.

Change is good. Quick change can be very dangerous.

In three weeks, you can improve a lot. You can train a lot. You can come up with a proper plan.

I really want to get involved in football again at some point. I know I'm getting older, but my life has just turned out a different way after I retired from football.

I want to see Pogba being a Manchester United player and being as good as everything else he does in life. He's absolutely brilliant on social media, and he's projecting himself to be this incredibly modern player.

If you're a senior player, and you really want to make an impact in the dressing room, it's difficult if you have players there who are not as committed as you are and they have a certain status.

It is painful to say that the best player you have is better off trying something new.

You have to bear in mind where Louis van Gaal has worked before. His self-belief is bigger than Jose Mourinho's.

Guardiola has a way of playing; he has a system, and he sticks to that.

With a club like Manchester United that have history and traditions, I think the manager at the club should respect that.

At the end of the day, it's 11 men versus 11 on the pitch.

Joe Hart has come in for a bit of criticism, but it's only because he's the England goalkeeper, and he's not got any competition. It's always been like that; it's just the way the English media works. Joe Hart is a tough cookie, and he won't listen to any of that.

Every player makes mistakes; every goalkeeper makes mistakes. Every manager does, every broadcaster - every person in life makes mistakes. But for goalkeepers, often when they make a mistake, it leads to a goal.

Football is a team sport. I'm proud of what I achieved in my career, but I also know that I wouldn't have achieved any of it without the support of my team-mates. I played with great players, great managers, and in great teams.

The thing about being a striker is you need to be lightning-fast.

When I hit 35, there were things I couldn't do which I'd done previously, and they had been completely natural to me.

I am a massive fan of Wayne Rooney, and it is nice to see him play in any position because he gives a 100 per cent. Not many players can do that and say they do that.

Obviously, I would very much like to see Cristiano Ronaldo back at Old Trafford.

We tend to think that people are more to blame for their acts than for their omissions.

Most of the robots being developed for home use are functional in design - Gecko's homecare robot looks rather like the Star Wars robot R2-D2. Honda and Sony are designing robots that look more like the same movie's 'android' C-3PO.

To make sustainable progress in reducing extreme poverty will require improvements in both the quantity and quality of aid.

Every profession will have its rogues, of course, no matter what oaths are sworn, but many health care professionals have a real commitment to serving the best interests of their clients.

Robots already perform many functions, from making cars to defusing bombs - or, more menacingly, firing missiles. Children and adults play with toy robots, while vacuum-cleaning robots are sucking up dirt in a growing number of homes and - as evidenced by YouTube videos - entertaining cats.

I think ethics is always there; it's not always a very thoughtful or reflective ethics.

But I think the majority of cows, and even more so chickens and pigs, are leading pretty miserable lives.

As we realize that more and more things have global impact, I think we're going to get people increasingly wanting to get away from a purely national interest.

What is faith? If you believe something because you have evidence for it, or rational argument, that is not faith. So faith seems to be believing something despite the absence of evidence or rational argument for it.

Grain that is used to feed animals that end up on our tables as turkeys and hams could have gone to feed starving people.

If people are prepared to eat locally and seasonally, then they probably do pretty well in terms of environmental impact.

We need to learn how to capture and kill wild fish humanely - or, if that is not possible, to find less cruel and more sustainable alternatives to eating them.

Scholars have long dreamed of a universal library containing everything that has ever been written.

What you could say, and what I do argue in the book, is that he doesn't have as much concern for the lives of Iraqis as he does for the lives of Americans, or even frozen American embryos.

Americans think they're the leader of the world and yet can say that they're putting their economic interests ahead of the lives of - quite possibly - tens of millions of people who over the next 50 years will die because of floods or storms or tropical diseases or whatever. I guess that sort of thing makes me angry.

If extreme poverty is allowed to increase, it will give rise to new problems, including new diseases that will spread from countries that cannot provide adequate healthcare to those that can. Poverty will lead to more migrants seeking to move, whether legally or not, to rich nations.

When you look at food as an ethical issue in the Christian tradition, you don't find very much about it. You don't find, as you do in the Jewish or Islamic or Hindu traditions, a lot of restrictions saying you can eat this but you can't eat that.

If we are concerned about the exploitation of human workers in countries with low standards of worker protection, we should also be concerned about the treatment of even more defenceless non-human animals.

We may feel the pain of falling back from a level of affluence to which we have grown accustomed, but most people in developed countries are still, by historical standards, extraordinarily well off.

Ancient recipients of instant news probably couldn't do very much about it, for instance. Xerxes would still need three months to get his army together, and he might not get home for years.

I don't think nationalism is alone holding the field; it's in contention with a lot of different things.

In most of the world, it is accepted that if animals are to be killed for food, they should be killed without suffering.

I would like us to think about it more explicitly, and not take our intuitions as the given of ethics, but rather to reflect on it, and be more open about the fact that something is an ethical issues and think what we ought to do about it.

Business ethics has always had problems that are distinct from those of other professions, such as medicine, law, engineering, dentistry, or nursing.

Google has withdrawn from China, arguing that it is no longer willing to design its search engine to block information that the Chinese government does not wish its citizens to have. In liberal democracies around the world, this decision has generally been greeted with enthusiasm.

Do business managers have a commitment to anything more than the success of their company and to making money? It would be hard to say that they do. Indeed, many business leaders deny that there is any conflict between self-interest and the interests of all.

I just don't think that the differences you make by donating to a museum or an art gallery really compare to the differences you make by donating to the charities that fight global poverty.

Sometimes we know the best thing to do, but fail to do it. New year's resolutions are often like that. We make resolutions because we know it would be better for us to lose weight, or get fit, or spend more time with our children. The problem is that a resolution is generally easier to break than it is to keep.

We see things like reciprocity which are fairly central to our view of ethics. But if you're talking about a set of worked-out rules on what we are supposed to do then, yes, it is a human product.

Today, if you have an Internet connection, you have at your fingertips an amount of information previously available only to those with access to the world's greatest libraries - indeed, in most respects what is available through the Internet dwarfs those libraries, and it is incomparably easier to find what you need.

It's because I work in ethics, and, more specifically, applied ethics, that I think it's important that if you have things to say that you think are right and you think could make the world a better place, it's important that many people read about them.