Hume jokes are all the same (and super easy to think of), they are either about the Is-ought problem or The Problem of Induction. Hume was also famous for saying that reason is (and should be) a "slave of the passions", so I mixed it up a bit. You have to believe me, I am trying to come up with a bundle theory joke, but it isn't as easy as it sounds.
Bertrand Russell was pretty much as close to a Vulcan as we ever got. Although, actually, maybe Descartes would have been better considering the other characters. Oh well. Bertrand Russell also looks like a Vulcan, so there's that.
Star Trek was a popular sci-fi television and movie series, best known for being not as good as Star Wars.