He spoke of how fear deepened the nation's paralysis during the Great Depression. But current events illustrate how true his words remain today.

When the economy faltered last year, fear took over and made the recession deeper than it might have otherwise become. Bankers panicked and credit froze, making it nearly impossible for people to buy things and for companies to meet payroll.

Before the Great Depression, during the Spanish Flu Pandemic of 1918-19, fear caused the government to downplay what was happening. The result was more panic and more death because citizens lacked advice that could have been helpful.

Fast-forward to April 2009: Swine flu is spreading from Mexico to other parts of the globe and fear is again taking hold. Cable news anchors are practically yelling at us as they report the latest infections and deaths. People are walking around wearing masks and are afraid to go near pork.

The public should be concerned. The World Health Organization has raised its pandemic alert level from Phase 3 to 4, indicating that swine flu has achieved the ability to spread human-to-human. We're not officially in a pandemic until WHO raises the alert level to Phase 6. [See: A Pandemic Preparedness Primer]

At least one death in the US has been linked to swine flu, and more are sure to follow.

And while the current cases appear mild, with most victims making a full recovery, flu viruses are always mutating and there's the chance of it evolving into a more lethal strain as we saw with Spanish flu and, more recently, bird flu (though the latter remains mostly a bird-to-human disease that has yet to attain the ingredients for a pandemic).

But concern and fear are not necessarily the same thing.

Concern should cause us to keep an eye on the latest news reports and start thinking about precautions, whether that involves closing schools or having employees work from home somewhere down the line.

Fear, on the other hand, causes society to shut down, much as the economic crisis led to the near shut-down of the financial sector. People start shunning each other without justification, and companies go into a scramble as essential workers refuse to come to the office for fear of infection.

Our advice is to be aware and prepare for measures that may or may not be necessary later on. There is no shortage of information on the Internet that'll give companies and individuals all the knowledge needed to make it through this.

In the final analysis, it's best to gather as much information as is available and, from there, carve out a contingency plan to ensure order and calm in the face of crisis.

If we do that, there will indeed be nothing to fear.