sentences:  Litvinoff, when preparing "History of Love" for publication, insists that his editor include the Leo Gursky obit at the end, his way of ensuring that Leo will continue to "live" in the hearts of all readers of the book.And finally, Nicole Krauss includes the same obit at the end of her novel, as a way of urging all readers to keep this Leo, and all Leos, alive.There are many thematically significant literary allusions in "The History of Love".