At first glance, Vasubandhu and Spinoza's metaphysics could not be further apart. For the former, what exists at the most fundamental level of description are multiple mental and physical property-particulars, and for the latter, an all-encompassing singularity – God or Nature. But, by drawing from Spinoza's toolkit, I will argue that the notion of conceptual distinctions in Vasubandhu generates an internal pressure within his philosophy to later adopt what looks surprisingly like a substance monist picture (à la Spinoza): the perfected or consummate nature (pariniṣpanna-svabhāva) that is undifferentiated and inconceivable.