THREE:Thus, the two writers to whom Beccaria owed most were Montesquieu and Helvetius. The ��Lettres Persanes�� of the former, which satirised so many things then in custom, contained but little about penal laws; but the idea is there started for the first time that crimes depend but little on the mildness or severity of the punishments attached to them. ��The imagination,�� says the writer, ��bends of itself to the customs of the country; and eight days of prison or a slight fine have as much terror for a European brought up in a country of mild manners as the loss of an arm would have for an Asiatic.��[4] The ��Esprit des Lois,�� by the same author, probably contributed more to the formation of Beccaria��s thoughts than the ��Lettres Persanes,�� for it is impossible to read the twelfth book of that work without being struck by the resemblance of ideas. The ��De L��Esprit�� of Helvetius was condemned by the Sorbonne as ��a combination of all the various kinds of poison scattered through modern books.�� Yet it was one of the most influential books of the time. We find Hume recommending it to Adam Smith for its agreeable composition father than for its philosophy; and a writer who had much in common with Beccaria drew[8] from it the same inspiration that he did. That writer was Bentham, who tells us that when he was about twenty, and on a visit to his father and stepmother in the country, he would often walk behind them reading a book, and that his favourite author was Helvetius.