AbstractThis chapter focuses on Harrison’s life prior to writing Animal Machines. Together with her siblings, Harrison was brought up in close contact to Britain’s cultural elite. After attending schools in London, Harrison commenced her university studies in 1939. The outbreak of war had a transformative impact on her life. Harrison was evacuated to Cambridge where she likely came into contact with ethologist William Homan Thorpe. She converted to Quakerism and subsequently enrolled in the Friends’ Ambulance Unit. The Quaker principles of non-violence, humanitarianism, and bearing witness to injustice would serve as important reference points throughout Harrison’s campaigning. After the war, she completed her studies in the dramatic arts but abandoned a potential career as a theatre producer. In 1954, she married architect Dexter Harrison. Similar to many Quakers, Harrison’s humanitarian concerns motivated her to become involved in the Campaign for Nuclear Disarmament and protest perceived technological, moral, and environmental threats to society.