He was one of the great four writers and friends which included, apart from David, Danilo Danilo Kiš, Borislav Pekić and Mirko Kovač. Apart fom writing, he contributed to the scripts of several films including Occupation in 26 Tableaux. A Holocaust survivor, he took part in several international conferences and took part in many events and projects that were focussed on human and citizen rights.
David worked with the Centre for Cultural Decontamination, Radio B92 and the Beogradski krug (the association of intellectuals who were in the opposition to the regime of Slobodan Milosevic)
As it was put by Krzysztof Czyżewski: ,,he was one of those, how very few, before whom people bow their heads with reverence in all the towns and cities of the shattered Yugoslavia”.