"You are mistaken.

We don't always escape detection.

Sometimes we are caught--" "Caught ?" "Yes, and hanged." "But if that is so, why does it not get into the papers ?" "The papers are full of it." Andrew looked incredulous.
"In the present state of the law," said the president, "motive in a murder goes for nothing.

However iniquitous this may be--and I do not attempt to defend it--we accept it as a fact.

Your motives may have been unexceptionable, but they hang you all the same.