British Quotes and aphorisms about theories Dorothy L. Sayers George Eliot Richard Rogers Mary Leakey Peaches Geldof Alastair Campbell ,, So here is one of my theories on happiness: we cannot know if we have lived a truly happy life unti... Alastair Campbell ,, My closest friend, who died not long ago, is buried near Marx's grave in Highgate cemetery, so I se... Lucy Powell John B. S. Haldane Celia Green