To my mind, there are two things that make a novel a “classic”—a genuine classic, as opposed to merely “old and continuing to sell.” The first is that it speaks to the time in which the novel first appeared. There is no doubt The Forever War did this; its awards and acclaim are signifiers of that fact. The second thing is tougher, and that is that it keeps speaking to readers outside its time, because what’s in the book touches on something that never goes away, or at the very least keeps coming around.
