The great philosopher's name is commonly used in Greek families, and is one that could work for daring, philosophical American ones. With user friendly nicknames such as Ari, Aris, Artie, and Ris, Aristotle is a ambitious choice, associated with morality, ethics, literature, and psychology.

Obsolete Swanhild gives way to oh-so-modern Swan, joining the flock of newly fashionable bird names such as Wren and Lark. In France, the Swann spelling is fashionable for both sexes. But Swan carries an image of grace, though perhaps also a bit of languor. It's a lovely and original name, right for our times.

Hypatia, an ancient Greek name, has a distinguished namesake: Hypatia of Alexandria was an early philosopher and scholar of mathematics and astronomy. Fittingly, the name derives from the Greek hypatos meaning "highest, supreme", giving it a lofty and powerful feel.

Kinsey enjoyed popularity blip thanks to similarity to Lindsay, and because of Sue Grafton's alphabet mysteries heroine, Kinsey Millhone. Now, Kinsley has become more popular than Kinsey, perhaps because it's more distinct from Mackenzie offshoot, Kenzie.

The name of the great Renaissance astronomer and mathematician would make a distinctive hero-middle-name for the son of parents involved in those fields.

Tesla, the surname of Serbian inventor Nikola Tesla that has more recently been used as the brand name for an electric car, is gaining some use as a first name for girls. Exactly 100 girls were named Tesla in the U.S. last year. You might think of the name as a Tessa/Isla hybrid, though with Tesla the s is not silent. There was also a rock band named Tesla.

Strong but breezy with the unisex charm of Ellis and Hollis, this name was famously borne by Wallis Simpson (born Bessie), the woman for whom English king Edward VIII abdicated his throne in the 20th century. It ultimately comes from Wallace, an English and Scottish name meaning "foreigner", "Welsh" or "Celt".