The Strangest Man

When the seventy-year-old Dirac told this story, [...] he liked to point out that his first trip to Switzerland took place at the same time as Einstein was having his most successful spurt of creativity in Berne [...]. That year Einstein wrote four papers that changed the way people think about space, time, energy, light and matter, laying the foundations of quantum theory and relativity. Twenty-three years later, Dirac would be the first to combine the theories successfully.