"We regard it as an onerous but yet in another regard also a satisfying and fascinating task to be a servant of justice who discovers guilt and crime. We are amazed at such a person’s acquaintance with the human heart, with all the evasions and fabrications, even the most sophistical: how he is able to remember from year to year the most insignificant things merely in order to secure, if possible, a clue; how he, just by looking at the circumstances, seems to be able to conjure them into giving evidence against the guilty one; how nothing is too trivial for his attention, provided it could clarify his construction of the crime."