Cummings died young, suffering from Multiple Sclerosis. About his impending demise he wrote:
To me the honour is sufficient of belonging to the universe -- such a great universe, and so grand a scheme of things. Not even Death can rob me of that honour. For nothing can alter the fact that I have lived; I have been I, if for ever so short a time. And when I am dead, the matter which composes my body is indestructible -- and eternal, so that come what may to my 'Soul,' my dust will always be going on, each separate atom of me playing its separate part -- I shall still have some sort of a finger in the pie. When I am dead, you can boil me, burn me, drown me, scatter me -- but you cannot destroy me: my little atoms would merely deride such heavy vengeance. Death can do no more than kill you.I have download a free copy here of the work (which has fallen out of copyright). (Copy digitized by Robarts Library at the University of Toronto.) Even a cursory glance through some of the entries reveals a diarist of great humour and sensitivity. I believe that one cannot be disappointed by The Journal of a Disappointed Man.*
*From a 1919 Daily Herald review of the book: "… Barbellion had a faculty for seeing what other people miss, for deductions that were free of conventional control, and for expressing his intuitive perceptions in a lively and illuminating manner, which is what we call genius."