The world will suffer another financial crisis, former Federal Reserve chief Alan Greenspan has told the BBC.

"The crisis will happen again but it will be different," he told BBC Two's The Love of Money series.

He added that he had predicted the crash would come as a reaction to a long period of prosperity.

But while it may take time and be a difficult process, the global economy would eventually "get through it", Mr Greenspan added.

"They [financial crises] are all different, but they have one fundamental source," he said.

"That is the unquenchable capability of human beings when confronted with long periods of prosperity to presume that it will continue."

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"That is the unquenchable capability of human beings when confronted with long periods of prosperity to presume that it will continue."

Dear guru of the financial tricks, this is untrue. There are clever men who bet on a market crash sometimes or another and make oodles of money out of it on the derivative market. The derivative market is worth five times that of the entire money market and about ten times that of the GDP of the entire world... Someone somewhere sometimes is going to lose their pants.

Further more, by reducing regulations on the market, you have encouraged its overheating in illusionary prosperity that led to burning the house down...

And as you know, people can manipulate the market using many tricks from advertising to straight lies...

And please, we all know the market is a yo-yo... up and down, enough trusims, please...