As to their brains, the comparison with that of the latter banishes all doubts." As the narrator tries to teach the title ape to speak, he swears that Yzur takes on a more contemplative expression. The narrator compares the ape to "ancient men of the forest, who were forced into silence and submission" as well as the mentally deficient. But because the monkey is not fully human and does not speak like him, the man sees him as inferior and ultimately drives the monkey man. The tendency to see 'the other' as inferior is manifest in prejudice against native people as well as animals. Resnick's allegorical story shows how human violence and prejudice is an endless cycle. The relationship between humans and animals is more complex because of the deeper barriers to understanding and sympathy between the two species. Deep ecology principles would urge us, not to see animals...

"Humans have no right to reduce this richness and diversity except to satisfy vital needs" is another principle of the movement (Naess & Sessions 2010).
References

Lugones, Leopoldo. (2007). Yzur. ERBZine. 1869. Retrieved December 13, 2010 at http://www.erbzine.com/mag18/yzur.htm

Naess, Arne & George Sessions. (2010). Deep Ecology Platform. Foundation for Deep Ecology.

Retrieved December 13, 2010 at http://www.deepecology.org/platform.htm

Resnick, Mike. (2001). The Elephants on Neptune. Asimov's Science Fiction.

Retrieved December 13, 2010 at http://www.asimovs.com/_issue_0202/elephantsneptune.html