It is of the highest ...

It is of the highest importance in the art of detection to be able to recognise out of a number of facts which are incidental and which are vital.
It is of the highest importance in the art of detection to be able to recognise out of a number of facts which are incidental and which are vital.

Quotes from the same author

It has long been an axiom of mine that the little things are infinitely the most important.
Mediocrity knows nothing higher than itself, but talent instantly recognizes genius.
Whenever you have eliminated the impossible, whatever remains, however improbable, must be the truth.
It is, I admit, mere imagination; but how often is imagination the mother of truth?
Skill is fine, and genius is splendid, but the right contacts are more valuable than either.