The associates got on each other's nerves.

In those confused pages of the _Politics_, in which Aristotle criticises from the point of view of experience the communism of Plato, the same point stands out: 'It is difficult to live together in community,' communistic colonists have always 'disputed with each other about the most ordinary matters'; 'we most often disagree with those slaves who are brought into daily contact with us.'[10] [10] _Politics_, Book II.ch.

V.
The Charity Schools of 1700 to 1850 were experiments in the result of a complete refusal of scope, not only for the instinct of property, but for the entirely distinct instinct of privacy, and part of their disastrous nervous and moral effect must be put down to that.

The boys in the contemporary public boarding-schools secured a little privacy by the adoption of strange and sometimes cruel social customs, and more has been done since then by systems of 'studies' and 'houses.' Experience seems, however, to show that during childhood a day school with its alternation of home, class-room, and playing field, is better suited than a boarding-school to the facts of normal human nature.
This instinctive need of privacy is again a subject which would repay special and detailed study.

It varies very greatly among different races, and one supposes that the much greater desire for privacy which is found among Northern, as compared to Southern Europeans, may be due to the fact that races who had to spend much or little of the year under cover, adjusted themselves biologically to a different standard in this respect.