(extracts)

The third patient:

(angry) What are you doing down there, you stupid fool!

The second patient:

(doesn't look at him) I am learning...

The third patient:

What are you learning?

The second patient:

Here lies the salvation... (delighted, he points to the lids and the handbook)

The third patient:

What is that?

The second patient:

Foreign languages... I have too started learning myself. Listen... (bangs twice, makes a pause, then bangs once again; pleased) You hear that?