Lister. The famous saying that represents Liszt's thought on punishment is to correct the criminals who can be corrected and not to harm the criminals who cannot be corrected. The theory of educational punishment is more scientific and progressive than the theory of depriving criminals of their abilities, but it regards educating criminals as the only attribute of punishment, completely denies the punitive nature of punishment and the resulting general preventive function, and It advocates the use of indefinite punishment, which has major flaws.