The human race likes to give itself airs. One good volcano can produce more greenhouse gases in a year than the human race has in its entire history.
Source: From Alt.Quotations Misc, an internet collection of quotations
-- Ray Bradbury, (Aug 22 1920-2012), US science-fiction writer; He is best known for SF stories combining social criticism, e.g., Fahrenheit 451 and The Martian Chronicles.