 Largely a product of his anti-foundationalism and his criticism of the extension-intension conflation, Wittgenstein’s later critique of set theory is highly consonant with his intermediate critique (PR §§109, 168; PG 334, 369, 469; LFM 172, 224, 229; and RFM III, §43, 46, 85, 90; VII, §16). Given that mathematics is a “MOTLEY of techniques of proof” (RFM III, §46), it does not require a foundation (RFM VII, §16) and it cannot be given a self-evident foundation (PR §160; WVC 34 &amp; 62; RFM IV, §3). Since set theory was invented to provide mathematics with a foundation, it is, minimally, unnecessary.