"My spiritual experiences are as real as my physical ones."

"I have a trade of my own. I suppose I am the only one in the world. I’m a consulting detective, if you can understand what that is."

"One of the most dangerous things for a man's mind is to be without an object."

"Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the…"

"To a great mind, nothing is little."