1984

by George Orwell

These people, whose origins lay in the salaried middle class and the upper grades of the working class, had been shaped and brought together by the barren world of monopoly industry and centralized government. As compared with their opposite numbers in past ages, they were less avaricious, less tempted by luxury, hungrier for pure power, and, above all, more conscious of what they were doing and more intent on crushing opposition. This last difference was cardinal.

Onto

There are only four ways in which a ruling group can fall from power. Either it is conquered from without, or it governs so inefficiently that the masses are stirred to revolt, or it allows a strong and discontented Middle Group to come into being, or it loses its own self-confidence and willingness to govern. These causes do not operate singly, and as a rule all four of them are present in some degree. A ruling class which could guard against all of them would remain in power permanently. Ultimately the determining factor is the mental attitude of the ruling class itself.

Good word

Sanity was statistical.