April in Paris
The central theme of this Ursula Le Guin story is the alienation and loneliness brought about by obsession with work and lack of companionship. A 15th century French scientist, frustrated with being unable to prove a theory he had developed, decides his work is a waste of time. He experiments with black magic and is surprised when his first spell is a success, allowing him to teleport kindred spirits from the past and future to join him. Those who come are so happy in his reality that they have no desire to return. Other themes: the occult, connection.

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Set in 1960s Johannesburg, this story by
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Set 500 years in the future, this story by