Education at school continues what has been done at home: it crystallizes the optical illusion, consolidates it with book learning, theoretically legitimizes the traditional trash and trains the children to know without understanding and to accept denominations for definitions. Astray in his conceptions, entangled in words, man loses the flair for truth, the taste for nature. What a powerful intellect must you possess, to be suspicious of this moral carbon dioxide and with your head swimming already, to hurl yourself out of it into the fresh air, with which, into the bargain, everyone round is trying to scare you!
— Alexander Herzen

Each cylinder is about 10 percent ancient air, a pristine time capsule of greenhouse gases - carbon dioxide, methane, nitrous oxide - all unchanged from the day that snow formed and first fell.
Robert Lee Hotz on ice taken from bore holes in Antarctica carbon dioxide quote

The key players are now all in place in Washington and in state governments across America to officially label carbon dioxide as a pollutant and enact laws that tax us citizens for our carbon footprints.
— John Coleman

I am convinced that policies meant to reduce alleged carbon dioxide-induced global warming will be destructive.
— Christopher Monckton

It's not the case that carbon dioxide drives temperatures. When you leave Ice Ages, it's the other way around: The temperatures go up first, and then carbon dioxide levels go up.
— carbon dioxide quotation by Piers Corbyn