In 1970, Rogers joined Arnhold & S. Bleichroeder. That same year, Rogers co-founded the Quantum Fund with George Soros. During the following 10 years the portfolio gained 4200% while the S&P advanced about 47%.[4] It was one of the first truly international funds. In 1980 Rogers decided to retire.

MARIA BARTIROMO
Gold, as you know, hit an all-time high today, with the Russian central bank buying bullion. How high can gold go?

JIM ROGERS
Well, I own gold and I have for a while. How high can it go? I fully expect it to be over a couple thousand dollars an ounce sometime in the next decade—I didn’t say the next month, I didn’t say the next year, I said the next decade—because paper money around the world is very suspect. But right now everybody’s bullish on it, so I don’t like to buy things when that’s happening. But I’m not selling under any circumstances.

What’s behind the runup? Has buying by the central banks changed the equation here? Or is this still a demand story?

Certainly a demand story because, as I said, everybody’s printing so much money and people around the world are worried about that. But you also have central banks, which five years ago were selling gold, now buying. So that’s a huge shift in the marketplace. Central banks are like lots of other people—they just follow the crowd. There are probably better commodities to buy than gold, but you can’t tell that to central banks because they’ve got gold on the brain.

How much of the runup is being driven by U.S. deficits and the weakening dollar?

A huge amount is about not just U.S. deficits, but all deficits. Deficits are going berserk nearly everywhere. Throughout history, printing money has led to weaker currencies and higher prices for real assets. And there are many, many pessimists about the dollar, including me. So many pessimists that I suspect there’s a rally coming. I have no idea why there should be, but things do usually rally when you have this many bears at the same time. I’ve actually accumulated a few more dollars. I mean, it’s not a significant position, but I do own more dollars than I did a month ago. And we’ll probably also have a gold correction because there’s so many bulls on gold.

So you’re looking at other commodities you think are better opportunities?

If you want to buy precious metal, I’d rather buy silver or palladium. Both are very depressed. I continue to be more optimistic about agriculture than some other commodities.

As BusinessWeek reports this week, global investors are snapping up thousands of acres of farmland in Africa. Money from everywhere—from Saudi Arabia to Wall Street-backed funds—is pouring in. Why the sudden focus on Africa?

The gigantic acreage in Africa has been underfarmed because there is not much infrastructure, not much machinery, not much expertise, not much fertilizer. I think the world is going to have huge food problems in the next few years. Other people seem to see that, too, so they’re buying up farmland. You can either buy it or lease it. It’s very, very cheap, it’s incredibly fertile, and it hasn’t been overexploited. And if you take in some expertise and some machinery and some fertilizer, you should make a lot of money. The labor’s cheap, everything’s cheap.

So you think Africa is a good investment opportunity?

I think it’s a fantastic investor opportunity. Now there are over 50 countries in Africa, so we can’t make too gross a generalization. But I mean, in the Congo, you don’t even have to plant anything. You just sit by the road long enough, something will grow. Yes, I am very, very optimistic.

What’s your outlook for commodities in 2010?

I’m not smart enough to know. But I will say that if the world economy gets better, then commodities will be one of the best places to be because of the shortages that are developing. If the world economy does not get better, commodities will still be the place to be because governments are printing all this money.

Tim Geithner has been under attack lately. How’s he doing?

Listen, I have been a critic for years. Geithner should never have been appointed to anything. He’s been wrong about just about everything for 15 years.

Do you think he’ll lose his job?

Of course he’s going to lose his job, because as Mr. Obama realizes that Geithner doesn’t know what he’s doing, he’s going to look for somebody else because he doesn’t want to take the heat himself. So he’s going to look to blame somebody, and the obvious person is Geithner.

This column marks the end of a four-year run interviewing heads of state, captains of industry, and lords of finance for BusinessWeek . In 2008, for example, there were 45 Facetimes, ranging from Barack Obama to Sarah Palin; Carlos Ghosn of Renault-Nissan to former Time Warner (TWX) chief Jerry Levin; Ken Lewis of BofA (BAC) to then Treasury Secretary Hank Paulson. I have enjoyed immensely the chance to share the views of world leaders with you, and I wish the magazine well under its new owner, Bloomberg L.P.

HERE