I think that I had better go, Holmes." "Not a bit, doctor. Stay where you are. I am lost without my Boswell.

There is nothing more deceptive than an obvious fact.

I am somewhat exhausted; I wonder how a battery feels when it pours electricity into a non-conductor?

The devil’s agents may be of flesh and blood, may they not?

I think there are certain crimes which the law cannot touch, and which therefore, to some extent, justify private revenge.

We balance probabilities and choose the most likely. It is the scientific use of the imagination.

'There's no need for fiction in medicine,' remarks Foster... 'for the facts will always beat anything you fancy.'