Gregory: "Is there any other point to which you would wish to draw my attention? " Holmes: "To the curious incident of the dog in the night-time. " Gregory: "The dog did nothing ...

I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

It has long been an axiom of mine that the little things are infinitely the most important.

It is a great thing to start life with a small number of really good books which are your very own.

It is my belief, Watson, founded upon my experience, that the lowest and vilest alleys in London do not present a more dreadful record of sin than does the smiling and beautiful ...

The case has, in some respects, been not entirely devoid of interest.

You see, but you do not observe.