The favourite slogan, the one that caught on during the May 1968 fête in France was "it is forbidden to forbid". There is nothing to forbid the youth of Europe to reject both communism and capitalism. What will they build in the absence of both systems? Will their concept of building a new structure with a new philosophy mean willful self-destruction? This sounds insane but the youth of Europe is not insane.
p. 20. - Letter to his daughter (1978)