 After Derrida's final rebuttal in 1989 the two philosophers did not continue, but, as Derrida described it, groups in the academy "conducted a kind of 'war', in which we ourselves never took part, either personally or directly".At the end of the 1990s, Habermas approached Derrida at a party held at an American university where both were lecturing.They then met at Paris over dinner, and participated afterwards in many joint projects.