Aristotle (Library of Congress Name Authority)—

Ancient Greek philosopher, scientist, and foremost intellect during the Classical period. Living from 384-322 B.C.E., Aristotle was first a student of Plato. His writings spanned across mathematics, science, and the humanities. As the pioneer of the study of zoology, Aristotle was considered a great scientific mind, but it is particularly his contributions to the field of philosophy and as founder of formal logic that his thought has pervaded Western culture.

Ariel—

The "airy spirit" in William Shakespeare's The Tempest. Although Ariel is trapped under Prospero's command, Ariel is quite powerful himself, with a range of abilities and a host of followers beneath him. Ultimately, Ariel manipulates Prospero by appealing to his humanity in order to gain his freedom.