The two essays are comparing and contrasting the seperation of the two cities. They're both being seperated by the Berlin wall. So far it's symbolized that people on both sides aren't free until all of them are free. The wall seperates Germany as if it's a gate that won't open. But this gate will soon open for freedom.

In the first essay, "Remarks in Rudolph Wilde Platz, Berlin", It explains how the wall seperates the walls using religious belief. He also uses examples like how he says that freedom is indivisible and that all men aren't free if one man isn't. He uses these examples to tell the German people how this wall only creates more suffering. It seperates people that want to be together. All of Germany is suffering because not everyone