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: Ellen Johnson Sirleaf is a Liberian politician who has served as the 24th and current President of Liberia since 2006. Sirleaf is the first elected female head of state in Africa.
