Prince George grew into a healthy, reserved and shy child. The family moved to Leicester Square, where George and his younger brother Prince Edward, Duke of York and Albany, were educated together by private tutors. Family letters show that he could read and write in both English and German, as well as comment on political events of the time, by the age of eight. He was the first British monarch to study science systematically. Apart from chemistry and physics, his lessons included astronomy, mathematics, French, Latin, history, music, geography, commerce, agriculture and constitutional law, along with sporting and social accomplishments such as dancing, fencing, and riding. His religious education was wholly Anglican. At age 10, George took part in a family production of Joseph Addison's play "Cato" and said in the new prologue: "What, tho' a boy! It may with truth be said, A boy in "England" born, in England bred." Historian Romney Sedgwick argued that these lines appear "to be the source of the only historical phrase with which he is associated".