To understand why dictators fall, it helps to recognise factors that produce a perfect anti-dictatorial storm. Barring missteps such as those that led to Gaddafi's undoing, a dictator's survival can be at risk because of newness in office, poor health, or old age combined with economic trouble.

Mushrooms are miniature pharmaceutical factories, and of the thousands of mushroom species in nature, our ancestors and modern scientists have identified several dozen that have a unique combination of talents that improve our health.

Happiness is determined by factors like your health, your family relationships and friendships, and above all by feeling that you are in control of how you spend your time.

The single most important factor in our long-term happiness is the relationships we have with our family and close friends.

Of course, the most important factor of all for long life is a good family. When a person goes home with the wife or the kids giving him endless headaches, then it's hard for that person to enjoy a long life. I am very fortunate, because my wife Elizabeth and my obedient children are very good; they have given me happiness.

Happiness is a critical factor for work, and work is a critical factor for happiness. In one of those life-isn't-fair results, it turns out that the happy outperform the less happy. Happy people work more hours each week - and they work more in their free time, too.

It is not just disposable income but whether people feel good about their immediate future that drives sales. It is this feel-good factor that drives the purchases more and more than mere economic wealth.

Because of lack of moral principle, human life becomes worthless. Moral principle, truthfulness, is a key factor. If we lose that, then there is no future.

The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment.

Among young people, often a key factor in them committing suicide is the trauma of transient relationships. They throw themselves into a friendship or network of friendships, then it collapses and they're desolate.

Our philosophy precedes from the belief that sport is an inalienable part of the educational process and a factor for promoting peace, friendship, cooperation and understanding among peoples.

Fitness will be a major factor in the first race and I think that will play into the hands of drivers who have been racing recently, rather than people like me who haven't raced properly for a decade. I'am not one of the favourites to start with.

My fitness idol is a sports personality and a young racer, Arman Ibrahim. He is very fit and he was also my partner in the TV show Fear Factor.'

I hate to say that my mother was 'just a housewife', because in addition to that she has had lots of part-time secretarial jobs in factories and hospitals, always working really hard for our family.

I come from a working-class family, and I've been working since I was 13, from babysitting to blueberry picking to factory work to bookstore work. And of course, being a mother and homemaker, the hardest work of all.

Coming to Australia, it was just really magical for me. It just had the wow factor of a different sort of place and, more so, just being with a family that wanted to love me and to have me, because I knew back then, before coming to Australia, there was no way of getting back home or finding my real family.

Faith is the first factor in a life devoted to service. Without it, nothing is possible. With it, nothing is impossible.

Religious faith depends on a host of social, psychological and emotional factors that have little or nothing to do with probabilities, evidence and logic.

It sounds simple telling people to work hard and never quit, but to really execute and demonstrate those principles takes discipline and faith. Those are the two factors that I believe separate the good from the great, the successes from the failures.

I don't have a fear factor. Well, not much of one. And I'm willing to risk quite a lot - as a comedian, you're always risking a lot. You're risking failure, especially if you're improvising and going on TV shows trying to make comedy out of thin air. That is quite a risky business.

By far the most important factor in the success or failure of any school, far more important than tests or standards or business-model methods of accountability, is simply attracting the best-educated, most exciting young people into urban schools and keeping them there.

One of the most basic factors in sports is that winning becomes a habit, and losing is the same way. When failure starts to feel normal in your life or your work or even your darkest vices, you won't have to go looking for trouble, because trouble will find you. Count on it.

Elegance is not a dispensable luxury but a factor that decides between success and failure.

One of the factors a country's economy depends on is human capital. If you don't provide women with adequate access to healthcare, education and employment, you lose at least half of your potential. So, gender equality and women's empowerment bring huge economic benefits.