Arthur Conan Doyle

Dogs don't make mistakes.

We must look for consistency. Where there is a want of it we must suspect deception.

Well, Watson, we can but possess our souls in patience and see what the hour may bring.

That the dog should die was after the beautiful, faithful nature of dogs.

A complex mind. All great criminals have that.

It was worth a wound; it was worth many wounds; to know the depth of loyalty and love which lay behind that cold mask. The clear, hard eyes were dimmed for a moment, and the firm lips were shaking. For the one and only time I caught a glimpse of a great heart as well as of a great brain. All my years of humble but single-minded service culminated in that moment of revelation.

When one tries to rise above Nature one is liable to fall below it. The highest type of man may revert to the animal if he leaves the straight road of destiny.

I am an omnivorous reader with a strangely retentive memory for trifles.

I am not the law, but I represent justice so far as my feeble powers go.

Good old Watson! You are the one fixed point in a changing age. There's an east wind coming all the same, such a wind as never blew on England yet. It will be cold and bitter, Watson, and a good many of us may wither before its blast. But it's God's own wind none the less, and a cleaner, better, stronger land will lie in the sunshine when the storm has cleared.

Mediocrity knows nothing higher than itself; but talent instantly recognizes genius.

There is but one step from the grotesque to the horrible.