This short story and essay collection contains some of my favorite stories of all time. For example Becalmed in Hell is about a man and his machine partner exploring Venus. It has a very clever psychological twist. Inconstant Moon, which won the Hugo in 1972, is about a couple of people inferring a great disaster on the far side of the world. Epic stuff. Man of Steel, Woman of Kleenex is a hilarious essay about the problems Superman would have mating with the hypothetical woman “LL”. It may be one of the funniest things ever written. You can read it here in its entirety.