And for those of you addicted to the mathematical insight that food grows arithmetically but population geometrically (Yes, this is you, Niall Ferguson) and similar mathematized illogicalities, I have a one for you.
For every mouth, there are two hands to work with. Satisfied? You can even count them, unlike the famously unreliable Malthusian (or, updated, Meadows) model.
Everyone produces more than they consume.
UPDATE:Even the New York Times is starting to notice that overpopulation is not the problem. But that is the point: people are the most valuable resource in potentia, and one of the jobs of society is to use that potential.