This switch from health to disease had been prefigured in the early days. In 1799 Sir John Sinclair had wanted to measure the ‘quantum of happiness’, but by 1825 legislators were trying to determine the ‘quantum of sickness’. Durkheim's first study of suicide neatly draws together these and later strands: happiness/health, normal/abnormal, and the medical model of suicide. Condorcet's moral science had been turned into empirical investigation, but the adjective ‘moral’ had not yet been hidden from view. The paper was subtitled ‘a study of moral statistics’. Five years later, Durkheim's first book announced, on its first page, that it was ‘an attempt to study the facts of moral life according to the method of the positive sciences … We do not wish to extract a morality from science, but to practise the science of morality.’