Derrida versus Heidegger on dissociation versus gathering

"Derrida thinks the catastrophe of memory, the impossibility of complete recollection, as a work of mourning. When we mourn we desire both to keep/gather and let go, and it is this sense of loss and letting go that keeps the work of mourning alive. But there is no such sense of loss in Heidegger. If Derrida is a thinker of loss and memory, then Heidegger is ultimately a thinker of gathering (Versammlung) and adjustment (Dike)."


in The Philosophy of Derrida,
by Mark Dooley and Liam Kavanagh
(a precious introduction to Derrida's thouhgt!)

Stocksfield, Acumen Publishing, 2007, p. 94