Turati commits the following errors in his reasoning: First, he sets aside the insane criminals; wrongly, according to Professor Ferri, for, although insane, they are criminals. Second, 20%, the figure to which born and insane criminals count up, is a very large number out of 60,000 prisoners. Third, Professor Ferri claims that it is incorrect to say that the other causes are reduced to zero the moment the social factors of crime are suppressed. For even with occasional criminals, where the environment plays a very important part, an individual factor must make its effect felt, or the individual would not become criminal. Professor Ferri asks, on the other hand: How does it happen that out of a hundred working-men living in the same environment, only a very few fall into crime? This can be explained only by admitting individual and physical causes. When socialists say that these individual differences are innate simply in consequence of the poverty in which ancestors of the persons in question have lived for thousands of years, the author admits this reasoning in great part, but thinks nevertheless that he is right in maintaining that these qualities are innate in certain individuals at the present time. With regard to the fact that a very high morality was maintained in New Lanark, the author says: first, that he would very much like to convince himself with his own eyes, especially since he has read that in this colony the habit of celebrating Christmas eve with excessive drinking was kept up; second, that he knows that crimes were committed in a communistic colony of that time; further we are not to forget that difficulties are increased in a great city. The following chapter is entitled: “Benessere e criminalità.” To the unproved assertion of the socialists that bad economic conditions are the principal if not the only cause of crime, the author opposes some facts to prove that this statement is largely incorrect. To this end he divides crimes into three groups: first, crimes against property, second, crimes against persons or crimes of blood, and third, crimes against morals. Besides these three categories there are many crimes which have neither directly nor indirectly any connection with bad economic conditions; for example, crimes against honor, insults, or abuse of power.