Who does not know Tocqueville cannot understand liberalism. A case of unanswerable power could, I think, be made out for the view that he and Lord Acton were the essential liberals of the nineteenth century.

'Alexis de Tocqueville', in F. J. C. Hearnshaw (ed.), The Social and Political Ideas of Some Representative Thinkers of the Victorian Age: A Series of Lectures delivered at King's College, University of London, During the Session 1931–1932 (1933), p. 100