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THREE:The result of recent enquiries into the state of civilisation under the Roman Empire during the first two centuries of its existence, has been to suggest conclusions in many respects at variance with those formerly entertained. Instead of the intellectual stagnation, the moral turpitude, and the religious indifference which were once supposed to have been the most marked characteristics of that period, modern scholars discern symptoms of active and fruitful thought, of purity and disinterestedness both in public and private life, but above all of a religious feeling which erred far more on the side of excess than on the side of defect. This change of view may be traced to various causes. A new class of investigators have made ancient history an object of special study. Fresh evidence has been brought to light, and a more discriminating as well as a more extended use has been made of the sources already available. And, perhaps, even greater importance is attributable to the principle now so generally accepted, that historical phenomena, like all other phenomena, are essentially continuous in their movement. The old theories assumed that the substitution of Christian for what is called Pagan196 civilisation was accompanied by a sudden break in men��s habits and ideas. But the whole spirit of modern philosophy has prepared us to believe that such a break is not likely to have ever occurred. And a new survey of the period in question is leading us to the conviction that, as a matter of fact, it did not occur.A pair of spring calipers will illustrate this principle. The points are always steady, because the spring acting continually in one direction compensates the loose play that may be in the screw. In a train of tooth wheels there is always more or less play between the teeth; and unless the wheels always revolve in one direction, and have some constant resistance offered to their motion, 'backlash' or irregular movement will take place; but if there is some constant and uniform resistance such as a spring would impart, a train of wheels will transmit the slightest motion throughout.