Much of what I have related and shall have to relate, may perhaps, I am aware, seem petty trifles to record. But no one must compare my annals with the writings of those who have described Rome in old days. They told of great wars, of the storming of cities, of the defeat and capture of kings, or whenever they turned by preference to home affairs, they related, with a free scope for digression, the strifes of consuls with tribunes, land and corn-laws, and the struggles between the commons and the aristocracy. My labours are circumscribed and inglorious; peace wholly unbroken or but slightly disturbed, dismal misery in the capital, an emperor careless about the enlargement of the empire, such is my theme. Still it will not be useless to study those at first sight trifling events out of which the movements of vast changes often take their rise.