A really solid piece of science fictional thinking and writing, Lathe of Heaven has a strong Dickian flavour with its focus on the questionability of reality and the mental stability of its protagonist, but Le Guin engages with the philosophical and ethical questions of the situation in a more upfront manner and the ending is less dark than a PKD novel. For all it's a slim volume, Lathe has more ideas and incident in it than many contemporary works. Strongly recommended.