The animal characters Walt Kelly created for his classic newspaper comic strip

were known for their seemingly simplistic, but slyly perceptive comments about the state of the world and politics.

None is more remembered than Pogo the ‘possum’s quote in the poster Kelly designed to help promote environmental awareness and publicize the first annual observance of Earth Day , held on April 22, 1970 :

“WE HAVE MET THE ENEMY AND HE IS US.”

In the poster, under the quote, Pogo is seen holding a litter pick-up stick and a burlap bag.

He appears to be getting ready to start cleaning up the garbage humans have strewn over Okefenokee Swamp, the part of the planet where he lives.

Kelly used the line again in the Pogo strip published on the second Earth Day in 1971 .

The words poignantly highlight a key concept of environmental stewardship: we all share part of the responsibility for the trashing of planet Earth, so we should all do our share to help clean it up.

Pogo’s quip was a pun based on the famous quotation “We have met the enemy and they are ours” — one of two famous quotes made by American Navy Commodore Oliver Hazard Perry on September 10, 1813 , after defeating a British naval squadron on Lake Erie during the War of 1812. (Perry’s other famous quote that day was “Don’t give up the ship.” )

used a version of the quote in the foreword to his 1953 book The Pogo Papers, but it was not as pithy or memorable as the line he coined for Earth Day.

Today, the environmental issues we face today are clearly daunting.

However, since the first Earth Day in 1970 many environmental battles have been won and there has been notable progress in addressing problems that seemed quite daunting in the past.

Back then, for example, it was perfectly legal to dump untreated sewage and industrial waste into local waterways or turn irreplaceable natural areas like Okefenokee Swamp into toxic waste dumps.

Indeed, the types and levels of pollutants and environmental damage allowed in 1970 now seem shocking in retrospect.

Current environmental laws are much stronger. And, with some notable exceptions (like worldwide carbon dioxide emissions), most types of water and air pollution have been significantly reduced during the past four decades.

That is due in part to the grassroots environmental movement which was symbolically launched and celebrated by the first Earth Day.

Walt Kelly died in 1973, just three years after his Earth Day poster was published.

The quote used as the poster’s headline is still famous today — and the concept embodied in the poster still holds true.

We can’t just blame the big bad corporations for the environmental problems we face. Most of the time, they are just giving us what we “demand” as consumers at a cost we are willing to pay, and abiding by laws created by politicians we elect.

We all need to our own small part, as consumers and voters. If we do, we can collectively have a significant impact on addressing the environmental problems that threaten our local communities, our country and “Spaceship Earth.”

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