  “One of the two lines into which the line would be split upon division would […] have an end point, but the other no beginning point. This inference has been quite correctly drawn by Bolzano, who was led thereby to his monstruous doctrine that there would exist bodies with and without surfaces, the one class containing just so many as the other, because contact would be possible only between a body with a surface and another without. He ought, rather, to have had his attention drawn by such consequences to the fact that the whole conception of the line and of other continua as sets of points runs counter to the concept of contact and thereby abolishes precisely what makes up the essence of the continuum.” [Franz Brentano, ‘Nativistic, Empiricist, and Anoetistic Theories of our Presentation of Space’ (1976: 146)]