Guess this requires no further explanation.
But until now, I never noticed the subtitle : "Man muss ein Stuck Unsicherheit ertragen konnen !" by Sigmund Freud ( translation "One should be able to cope with some uncertainty !" ).
Funny statement by a person who was committed to a psychiatric clinic lateron - but maybe it was not chess that got him into this mental state, maybe he just read too many books by Freud ?