I never guess. It is a shocking habit destructive to the logical faculty.

Quote by Arthur Conan Doyle

Topics: Arthur Conan Doyle Quotes

The ideal reasoner, he remarked, would, when he had once been shown a single fact...

The ideal reasoner, he remarked, would, when he had once been shown a single fact...

It is an old maxim of mine that when you have excluded the impossible, whatever...

It is an old maxim of mine that when you have excluded the impossible, whatever...

The most difficult crime to track is the one which is purposeless.

The most difficult crime to track is the one which is purposeless.

Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth.

Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth.

It is a capital mistake to theorize before one has data.

It is a capital mistake to theorize before one has data.

You will, I am sure, agree with me that... if page 534 only finds us...

You will, I am sure, agree with me that... if page 534 only finds us...

Sir Walter, with his 61 years of life, although he never wrote a novel until...

Sir Walter, with his 61 years of life, although he never wrote a novel until...

The lowest and vilest alleys of London do not present a more dreadful record of...

The lowest and vilest alleys of London do not present a more dreadful record of...

As Cuvier could correctly describe a whole animal by the contemplation of a single bone,...

As Cuvier could correctly describe a whole animal by the contemplation of a single bone,...

Where there is no imagination there is no horror.

Where there is no imagination there is no horror.

I have frequently gained my first real insight into the character of parents by studying...

I have frequently gained my first real insight into the character of parents by studying...

Of all ghosts the ghosts of our old loves are the worst.

Of all ghosts the ghosts of our old loves are the worst.

We can't command our love, but we can our actions.

We can't command our love, but we can our actions.

Nothing clears up a case so much as stating it to another person.

Nothing clears up a case so much as stating it to another person.

His ignorance was as remarkable as his knowledge.

His ignorance was as remarkable as his knowledge.

I have seen too much not to know that the impression of a woman may...

I have seen too much not to know that the impression of a woman may...

Any truth is better than indefinite doubt.

Any truth is better than indefinite doubt.

I consider that a man's brain originally is like a little empty attic, and you...

I consider that a man's brain originally is like a little empty attic, and you...

London, that great cesspool into which all the loungers and idlers of the Empire are...

London, that great cesspool into which all the loungers and idlers of the Empire are...

There is nothing more unaesthetic than a policeman.

There is nothing more unaesthetic than a policeman.