Between 1815 and 1914, approximately 400 million people and roughly 10 million sq miles of territory joined the British Empire, and with it, a carefully manufactured cultural identity began to emerge. “The stiff upper lip was historically an upper class, public school, university and then military concept,” said Dixon, “a brutal, spartan way of not showing your feelings and ruling the world on the basis of your superior self-control – which veered over into oppression and cruelty.”