There are two main accounts of what it is for external objects to be presented in visual experience. According to particularism , particular objects are built into the representational contents of experiences. Existentialism is a quite different view. According to existentialism, the representational contents of perceptual experiences are general rather than particular, in the sense that the contents can be fully captured by existentially quantified statements. The present paper is a defense of existentialism. It argues that existentialism is much better equipped than particularism to explain the contents of hallucinations, and it defends existentialism against three objections.