In imitation of this principle, criminal anthropologists seek to devise a means of making offenders serviceable to civilisation by carefully analysing their tendencies and psychology, and fitting them into some suitable groove in the social scheme, where they may be useful to themselves and to others. Side by side with depraved instincts, criminals frequently possess invaluable gifts: an abnormal degree of intelligence, great audacity, and love of innovation. The wonderful galleries and fortifications cut out in the rocks at Gibraltar and Malta by English convicts and the complete transformation of parts of Sardinia have led criminologists to the conclusion that the ancient penalty of enforced labour was more logical, useful, and advantageous both for the culprit and the community than all modern punishments. The Mormons of America and the religious sects persecuted in Russia by an omnipotent bureaucracy, have by their energy transformed uninhabitable regions into lands of extraordinary fertility. Still greater results might be obtained, if the abnormal tendencies of certain individuals were turned into useful channels, instead of being pent up until they manifest themselves in anti-social acts, and this beneficent and lofty task should devolve on teachers and protectors of such of the young as show physical and psychic anomalies at an early age. The colonisation of wild regions and all professions (motoring, cycling, acrobatic and circus feats) which demand audacity, activity, love of adventure, and intense efforts followed by long periods of repose are eminently suited to criminals. There are cases on record in which young men have actually become thieves and even murderers in order to gain sufficient means to become comedians or professional cyclists, and there is every reason to suppose that these crimes would never have been committed had the youths been able to obtain the required sums honestly. On the other hand, men of bad character, ready to develop into criminals, often undergo a complete transformation when they find some outlet for their intelligence and aptitudes, in becoming pioneers in virgin regions or soldiers. War, the original, perpetual and exclusive occupation of our ancestors, is eminently suited to the tendencies of criminals. All the characteristics of the criminal, impulsiveness, cynicism, physical and moral insensibility, and invulnerability are valuable qualities in the soldier in times of war, especially when waged against savage and barbarous nations, when cunning and ability have to be employed against primitive races who laugh at the rules and ethics of civilised warfare.