From an interview with Hubbert in Leading Edge magazine, published in February, 1983:
A non-catastrophic solution is impossible, Hubbert feels, unless society is made stable. This means abandoning two axioms of our culture.. . the work ethic and the idea that growth is the normal state of affairs. Hubbert challenges the latter mathematically and concludes the exponential growth of the last two centuries is the opposite of the normal situation.
"It is an aberration. For most of human history, the population doubled only once every 32,000 years. Now it's down to 35 years. That is dangerous. No biologic population can double more than a few times without getting seriously out of bounds. I think the world is seriously overpopulated right now. There can be no possible solutions to the world's problems that do not involve stabilization of the world's population."
Read the long but informative article here. This guy, a Texan by birth, may have been one of the smarter people of the 20th Century.