Since "aporia" is Today's Word, the definition in this site is worth posting:

aporia
The expression of real or simulated doubt or perplexity. In the terminology of deconstruction,
aporia is a final impasse or paradox-the site at which the text most obviously undermines its
own rhetorical structure, dismantles, or deconstructs itself.
[Gk. "without passage"]
"A virginal air, large blue eyes very soulful and appealing, a dazzling fair skin, a supple and
resilient body, a touching voice, teeth of ivory and the loveliest blond hair--there you have
a sketch of this charming creature whose naive graces and delicate traits are beyond our
power to describe." (Marquis De Sade)

He has described her physique, but feels unable to describe her personality. Perhaps being
Marquis De Sade, he is too full of fantasies about ravishing her body to pay attention to
her mental attainments. Though he would ravish them also.

For comparison, from Silva Rhetoricae:
Deliberating with oneself as though in doubt over some
matter; asking oneself (or rhetorically asking one's hearers)
what is the best or appropriate way to approach something.

Examples

Where shall I begin to describe her wisdom? In her knowledge of
facts? In her ability to synthesize diverse matters? In her capacity to
articulate complex ideas simply?