THe Australian and New Zealand Psychodrama Association Inc. title page …
Begegnung conveys the notion that two or more persons meet not only to face one an other, but to live and experience one another as actors, each in his own right. It is not only an emotional rapport, like the professional meeting of a physician or therapist and patient; or an intellectual rapport, like a teacher and student; or a scientific rapport, like a participant observer with his subject. It is a meeting on the most intensive level of communication. The participants are not put there by any external authority; they are there because they want to be, representing the supreme authority of the self-chosen path.
(J L Moreno Encounter)
Where is this quote from? The idea behind it is great. It seems to suffer, like the Motto, from translation.
Here is the wikipedia page with quotes in German.