John Stuart Mill 10 During the two years which immediately preceded the cessation of my official life, my wife and I were working together at the “Liberty.” I had first planned and written it as a short essay in 1854. It was in mounting the steps of the Capitol, in January, 1855, that the thought first arose of converting it into a volume. None of my writings have been either so carefully composed, or so sedulously corrected as this. After it had been written as usual twice over, we kept it by us, bringing it out from time to time, and going through it de novo, reading, weighing, and criticizing every sentence. Its final revision was to have been a work of the winter of 1858-9, the first after my retirement, which we had arranged to pass in the South of Europe. That hope and every other were frustrated by the most unexpected and bitter calamity of her death—at Avignon, on our way to Montpellier, from a sudden attack of pulmonary congestion.

Note from KBJ: Mill dedicated On Liberty (1859) to his wife.