The remedies for all our diseases will be discovered long after we are dead; and the world will be made a fit place to live in, after the death of most of those by whose exertions it will have been made so. It is to be hoped that those who live in those days will look back with sympathy to their known and unknown benefactors.

John Stuart Mill, ‘Diary’, April 15, 1854, in The Collected Works of John Stuart Mill, Toronto, 1988, vol. 27, p. 668