Evil is not something superhuman, it's something less than human.

What I feel is that if one has got to have a murder actually happening in one's house, one might as well enjoy it, if you know what I mean.

Prisoners at the bar, have you anything to say in your defence?

Every murderer is probably somebody's old friend.

I believe, Messieurs, in loyalty---to one's friends and one's family and one's caste.

If anyone is really determined to lend you a book, you never can get out of it!

I know nothing about pistols and revolvers, which is why I usually kill off my characters with a blunt instrument or better with poisons. Besides, poisons are neat and clean and really exciting... I do not think I could look a really ghastly mangled body in the face. It is the means that I am interested in. I do not usually describe the end, which is often a corpse.