Read it through once

In one respect the million and a half of Berlin’s population are like a family; the head of this large family knows the names of its several members, and where the said members are located, and when and where they were born, and what they do for a living, and what their religious brand is. Whoever comes to Berlin must furnish these particulars to the police immediately; moreover, if he knows how long he is going to stay, he must say so. If he take a house he will be taxed on the rent and taxed also on his income. He will not be asked what his income is, and so he may save some lies for home consumption. The police will estimate his income from the house-rent he pays, and tax him on that basis.