"I have learned that in a long life we all eventually play the part of the betrayed, and we all eventually play the part of the betrayer, and neither is pleasant because both roles involve pain, inflicting or absorbing it."

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In discussing the state of the atmosphere following a nuclear exchange, we point especially to the effects of the many fires that would be ignited by the thousands of nuclear explosions in cities, forests, agricultural fields, and oil and gas fields. As a result of these fires, the loading of the atmosphere with strongly light absorbing particles in the submicron size range (1 micron = 10-6 m) would increase so much that at noon solar radiation at the ground would be reduced by at least a factor of two and possibly a factor of greater than one hundred.

— Paul J. Crutzen