Richard A. Proctor 
Our Place Among Infinities [PDF ebook] 
A Series of Essays, Contrasting Our Little Abode in Space and Time

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. It will be seen, that my views respecting the interesting question of life in other worlds have changed considerably since I wrote the work bearing that title. I still consider that work a sound exposition of the theory of the plurality of worlds, though I consider that the weight of evidence favours my theory of the (relative) paucity of worlds.