"Detection is, or ought to be, an exact science and should be treated in the same cold and unemotional manner."

"Healthy scepticism is the basis of all accurate observation."

"The greatest tragedies are those that are never told."

"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."

"We are all pilgrims on a journey."