“Poison has a certain appeal … It has not the crudeness of the revolver bullet or the blunt weapon.”

“They conceive a certain theory, and everything has to fit into that theory. If one little fact will not fit it, they throw it aside. But it is always the facts that will not fit in that are significant.”

“Real evidence is usually vague and unsatisfactory. It has to be examined---sifted. But here the whole thing is cut and dried. No, my friend, this evidence has been very cleverly manufactured---so cleverly that it has defeated its own ends.”

“It often seems to me that's all detective work is, wiping out your false starts and beginning again.""Yes, it is very true, that. And it is just what some people will not do. They conceive a certain theory, and everything has to fit into that theory. If one little fact will not fit it, they throw it aside. But it is always the facts that will not fit in that are significant.”

“If thing is as clear as daylight, mistrust it! someone has made it so!”

“Our weapon is our knowledge. But remember, it may be a knowledge we may not know that we possess.”

“The expected has happened, and when the expected happens, it always causes me emotion.”