"Geologists have a saying -- rocks remember." --Neil Armstrong
"Geology: The study of the planet Earth. It is concerned with the origin of the planet, the material and morphology of the Earth, and its history and the processes that acted (and act) upon it to affect its historic and present forms. In the pursuit of that knowledge, the science considers the physical forces that influenced, and continue to influence, change; the chemistry of its constituent materials; the record and age of its past as revealed by the organic remains that are preserved in the layers of its crust or by interpretation of relic morphology and environment. Clues to the origin of the Earth are sought through the study of extraterrestrial bodies and their atmospheres that may reflect an earlier stage of this planet, or whose history may share the events and forces that created the Earth."--from the American Geological Institute's Glossary of Geology, edited by Margaret Gary, Robert McAfee Jr., and Carol L. Wolf)