I have already explained to you that what is out of the common is usually a guide rather than a hindrance.
The most difficult crime to track is the one which is purposeless.
The chief proof of man's real greatness lies in his perception of his own smallness.
You cannot see the lettuce and the dressing without suspecting a salad.
Excellent!" I cried. "Elementary," said he.
There is a mystery about this which stimulates the imagination; where there is no imagination there is no horror.