Heh, Stanislaw Lem is one of my favorite writers...but while Solaris is the book he's best known for, at least in the English-speaking world, it's one of the last things I'd use to introduce someone to his work. His lighter Borgesian satirical pieces are way more accessible and friendly, and they also had the benefit of better, direct translations. For some bizarre reason, while all of his other stuff was translated directly from the original Polish to English, the only English version of Solaris is based on the French translation. Call me cynical, but I don't think adding in an extra layer of filtering like that is going to do a book any favors.