Four of the most complete burglars I ever knew were men of this stamp. Three of them are now in prison, and though the fourth sometimes comes to see me and produces evidence to show that he is getting a decent living, I shall not be surprised if he too suddenly disappears. One of the cleverest, coolest and most perfect criminals I ever knew was of very small size, straight in body if crooked in mind. While I am persuaded that physically there exists no such thing as a criminal type, I am still more persuaded that socially there exists no such thing as a “criminal class.” Real crime exists altogether apart from bodily conformation or from social standing. It may be said, and with truth, that the prison population is largely recruited from the ranks of the poor. But it must be borne in mind that the great mass of the people are poor, many of them being very poor. The number of the rich or well-to-do is but small compared with the number of poor. It is quite natural, then, that the bulk of prisoners should come from the class that overwhelmingly predominates. If the numbers of affluent and the poor could be exactly ascertained, I believe that it would be found that the poor do not contribute more than a proportionate share of the country’s criminals. Poverty itself is but rarely a decisive factor in the perpetration of crime, though environment is. In poor countries crime is not rampant, for Ireland, the poorest of the British Isles, shows a much lower ratio of crime than England, Scotland or Wales. Even in the terrible slums of London, where the poverty is intense, where misery and suffering abound, where thousands of men and women are but a single day in advance of starvation, where absolute destitution is always in evidence, the number of real and confirmed criminals does not exceed a fair proportion when the number of the inhabitants are taken into consideration. I feel bound to say this much for the very poor in our London slums. During many years’ close acquaintance, I have found them to be as law-abiding and honest as any portion of the community in proportion to numbers. When their environment and temptations are considered, their rectitude, to me, is a matter of great wonder. There are criminals amongst them, but after all they are the exceptions, and the worst criminals that are amongst them are those who have descended from higher social stations. Man for man and woman for woman, my experience has taught me that slum-dwellers are not below the average population in honesty and industry. I say this appears marvellous at first thought, but in reality it is not so, for wealth and leisure are not unmixed blessings. Probably they are as likely to produce criminals, or even more so, than poverty and care. The criminal ranks, then, are by no means recruited from the poor alone, for all classes and every station contribute their proportion.