What we observe is not nature itself but nature exposed to our method of questioning. Our scientific work in physics consists in asking questions about nature in the language that we possess and trying to get an answer from experiment by the means that are at our disposal.
Bio: David Howell Petraeus is a retired American military officer and public official. He served as Director of the Central Intelligence Agency from September 6, 2011, until his resignation on November 9, 2012.
