David Goodall, the 104-year-old Australian scientist who campaigned for the legalization of assisted suicide, died Thursday in Switzerland, Fox News reports. Goodall, who spoke at length on the eve of his death about why he wanted to end his own life, administered a lethal drug under the guidance of doctors at the Life Circle clinic in Basel, CNN reports. He had traveled there to die, with four family members and a close friend by his side, because euthanasia is illegal in his homeland of Australia. Goodall, a renowned botanist and ecologist, died while listening to Beethoven's "Ode to Joy." (More assisted suicide stories.)