But then there are the eternal muses, such as supermodel Naomi Campbell, who has inspired everyone from Dolce & Gabanna to Sui.
For now, it appears Palin is Sui generis among America's political dropouts.
The parallels are unavoidable and suggest that the Bible is not Sui generis.
1787, Latin, literally "of one's own kind, peculiar." First element from sui, genitive of suus "his, her, its, one's," from Old Latin sovos, from PIE root *swe-, pronoun of the third person (see idiom).
A person or thing that is unique, in a class by itself: “She is an original artist; each of her paintings is sui generis.” From Latin, meaning “of its own kind.”