The importance is getting to something truthful and in that moment can only be in that moment. I don't like to use the word "improvise," but it's a continual writing of the film.
And tell him it's quite true that the best of the philosophers are of no use to their fellows; but that he should blame, not the philosophers, but those who fail to make use of them.
I do not understand this squeamishness about the use of gas... I am strongly in favour of using poisoned gas against uncivilised tribes... It is not necessary to use only the most deadly gases: gases can be used which cause great inconvenience and would spread a lively terror and yet would leave no serious permanent effects on most of those affected.