We citizens of the affluent countries tend to discuss our obligations toward the distant needy mainly in terms of donations and transfers, assistance and redistribution: How much of our wealth, if any, should we give away to the hungry abroad?

If I were surrounded by angels who were purely rational and had no inclinations at all, I couldn't do anything for them. I couldn't make them happy; I couldn't make them sad, I would be entirely useless as a moral agent.

Medicines are unusual commodities. Important drugs can save the lives and protect the health of millions. Their consumption can bring huge benefits, by helping patients to avoid infection and preventing serious damage to the economies of families, nations and even humanity at large.

It seems far-fetched, even preposterous, to blame the global economic order for the persistence of severe poverty in countries that are ruled by obvious thugs and crooks.

I'm very smart, and I have a great team of people around me investing my money. I'm not buying gold - yet.

If you are born into poverty, the chances are good that your children will be born into poverty. Find a way to give poor kids the same cognitive stimulus that rich kids receive, and they should end up with the same tools for success.

Take the time to shop for yourself and cook. All of this is an investment in yourself, and if you're not going to invest time and money in what you put in your body, then what are you going to spend money on? It's kind of the most important thing.

Business is all about the customer: what the customer wants and what they get. Generally, every customer wants a product or service that solves their problem, worth their money, and is delivered with amazing customer service.