People Who Think Of Themselves As Exiles,

This Is Something Everyone Knows: A Well-used City Street Is Apt To Be A Safe Street. A Deserted City Street Is Apt To Be Unsafe.

The First Fundamental Of Successful City Life: People Must Take A Modicum Of Responsibility For Each Other Even If They Have No Ties To Each Other. This Is A Lesson No One Learns By Being Told. It Is Learned From The Experience Of Having Other People Without Ties Of Kinship Or Close Friendship Or Formal Responsibility To You Take A Modicum Of Responsibility For You.

Advanced Cultures Are Usually Sophisticated Enough, Or Have Been Sophisticated Enough At Some Point In Their Pasts, To Realize That Foxes Shouldn't Be Relied On To Guard Henhouses.

In Trading With Each Other Cities Can't Be In Too Different Stages Of Development, And They Can't Copy One Another. Backward Cities, Or Younger Cities, Or Newly Forming Cities In Supply Regions, Have To Develop To A Great Extent On One Another's Shoulders. This Is One Of The Terrible Things About Empires. Empires Want Them Only To Trade With The Empire, Which Doesn't Help Them At All. It's Just A Way Of Exploiting Them.

In Small Settlements Everyone Knows Your Affairs. In The City Everyone Does Not-only Those You Choose To Tell Will Know About You. This Is One Of The Attributes Of Cities That Is Precious To Most City People.