Russell H. Conwell 
Praying for Money [EPUB ebook] 

It would be no more surprising for the discovery of a means of direct spirit communication with the spiritual life than it was to be convinced that Marconi had discovered a sure method of telegraphing and telephoning without wires. The discovery of the laws which made electricity a servant of mankind was an astonishing revelation which was as unbelievable as is the law of spiritual telepathy. Human telepathy, which is a mysterious means of communication between persons without the use of known material agency, is in the initial and experimental stage. But the possibility of such thought transference is generally admitted.