THREE:5. The boiler is the main part, where power is generated, and the engine is but an agent for transmitting this power to the work performed.As a last illustration of the extent to which authority and subordination were pushed in Roman society, it may be mentioned that the better class of slaves were permitted to keep slaves for their own service. But whether the institution of slavery as a whole should be reckoned among the conditions favourable to authoritative beliefs is doubtful, as it was an element common to every period of antiquity. Perhaps, however paradoxical such an assertion may seem, the very frequency of emancipation gave increased strength to the feeling of dependence on an overruling personal power. A freedman could not forget that the most important event in his life was due, not to any natural law, but to the will or the caprice of a master; and this reflection must have confirmed his faith in the divine beings of whom he and his master were fellow-slaves.
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