"Hallucination" by Isaac Asimov is a science fiction short story published in 1985 and divided into three parts, exploring the nature of thought, as well as human closed-mindedness and ecological domination.

The story centers upon Sam Chase, a young student who is reluctantly assigned to Energy Planet to perform his specialized education. Energy Planet orbits a neutron star in the Milky Way, making it an ideal place to develop a new form of energy for Earth. Energy Planet has no inhabitants except for plants and insects and is Earth-like in many respects....

(The entire section contains 271 words.)