A curious philosopher
He keeps a blog that outlines not only his academic research - but his musings.
He ponders everything from the protocol of the double-cheek bisous to the Twitter scandal of New York congressman Anthony Weiner.
It's all fodder for a curious mind. But Justin Smith believes that 'curiosity' is, sadly, no longer valued by philosophers.
He recently wrote about that loss of curiosity in a New York Times article.
And that made us... a bit curious.
We called him up at the The Institute for Advanced Study in Princeton, New Jersey, where he is spending the semester.