A short interview with Peter Singer about his meta-ethics and some misconceptions about his views

Not philosophically deep, but interesting nonetheless.   Here's his final comment:

I wish more philosophers would work on things that matter. I regret the fact that so many very bright and hard-working philosophers spend their time on issues that are of interest only to other philosophers, and will never have any impact on anyone outside philosophy.

I guess I don't think having an impact on people outside philosophy is necessarily a good marker that the things being worked on actually "matter."  Popular uptake for certain philosophical ideas is often a symptom of current ideological peculiarities that admit of other explanations (vide "Effective [sic] Altruism").  On the other hand, I would agree that uptake by scholars in other fields (at least serious fields) is often a good indicator that the philosophical work deals with stuff that "matters."