Sans souci means "no worries" in French. Sanssouci is the name of an imperial summer palace in Potsdam, a major tourist attraction today thanks to its gardens where one can spend a day with no worries indeed.
Strolling in the lanes, admiring the trees, the flowers and the water fountains, one feels happy and grateful towards Old Fritz, the Prussian King Frederick the Great who designed this place.
As for me I was reminded of an exchange of puzzles my father used to explain to me when I was a child. It had to do with the King, Voltaire and the palace of Sanssouci. I could never imagine at the time that there would come a day when I would visit this place.