Ooooh... tough one. Foucault's Pendulum by Umberto Eco, Stranger in a Strange Land by Heinlein, Dune by Herbert, Childhood's End by Arthur C. Clarke, Geek Love. You get the top five at the moment - sorry, can't make up my mind.
Do you consider music to be a language?
M.
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My thanks to all the wonderful members here; I will miss the opportunity to continue to learn and work with you.
For those who seek an alternative, it is coming.
So long, and thanks for all the fish!