Assuredly God put us into a world of phenomena, and gave us inquiring minds.

We have as much right to explore the phenomena of these minds as to explore the ocean.

Again, if it be said that our inquiries may lead to an undignified theory of the future life (so far they have not led to any theory at all), that, also, is the position of the Dreadful Consequences Argufier.

Lastly, "the stories may frighten children".

For children the book is not written, any more than if it were a treatise on comparative anatomy.
The author has frequently been asked, both publicly and privately: "Do you believe in ghosts ?" One can only answer: "How do you define a ghost ?" I do believe, with all students of human nature, in hallucinations of one, or of several, or even of all the senses.