 It would be disappointing if this objection simply assumed from the outset that (a) objects like tables and human beings are substances and (b) substances neither inhere in nor are predicable of other substances. Spinoza agrees with (b), but he has already argued pace (a) that there can be only one substance. It would be unfair to grant him that conclusion in Ip14 and then insist upon reading Ip15 that other things still ought to have all the features of substances. (Of course, these intuitive concerns may well provide reasons to reconsider Spinoza’s arguments for Ip14.)