Born in Stockholm in 1833 of Swedish parents, moved with his family to St. Petersburg, then the capital of Russia, at the age of nine. There his energetic and inventive father soon acquired a strong and respected position as an inventor and industrialist. Nobel subsequently lived in several countries and ultimately came to regard himself as a citizen of the world. Even so, he never gave up his Swedish citizenship. By virtue of the education he received in many countries, Nobel read, spoke and wrote fluently in five European languages: Swedis ....