To Archidamus (67)

They feel such distrust and such hatred of one another that they fear their fellow-citizens more than the enemy; instead of preserving the spirit of accord and mutual helpfulness which they enjoyed under our rule, they have become so unsocial that those who own property had rather throw their possessions into the sea than lend aid to the needy, while those who are in poorer circumstances would less gladly find a treasure than seize the possessions of the rich;