And how is it possible to cling to that obsolete idea of moral guilt, according to which every individual is supposed to have the free choice to abandon virtue and give himself up to crime? The positive school of criminology maintains, on the contrary, that it is not the criminal who wills; in order to be a criminal it is rather necessary that the individual should find himself permanently or transitorily in such personal, physical and moral conditions, and live in such an environment, which become for him a chain of cause and effect, externally and internally, that disposes him toward crime. This is our conclusion, which I anticipate, and it constitutes the vastly different and opposite method, which the positive school of criminology employs as compared to the leading principle of the classic school of criminal science. In this method, this essential principle of the positive school of criminology, you will find another reason for the seemingly slow advance of this school. That is very natural. If you consider the great reform carried by the ideas of Cesare Beccaria into the criminal justice of the Middle Age, you will see that the great classic school represents but a small step forward, because it leaves the penal justice on the same theoretical and practical basis which it had in the Middle Age and in classic antiquity, that is to say, based on the idea of a moral responsibility of the individual. For Beccaria, for Carrara, for their predecessors, this idea is no more nor less than that mentioned in books 47 and 48 of the Digest: "The criminal is liable to punishment to the extent that he is morally guilty of the crime he has committed." The entire classic school is, therefore, nothing but a series of reforms. Capital punishment has been abolished in some countries, likewise torture, confiscation, corporal punishment. But nevertheless the immense scientific movement of the classic school has remained a mere reform.