This thesis addresses a debate within the philosophy of perception between so-called conceptualists and nonconceptualists. Its principal thesis is that the intentional content of a perceptual experience is the content of a thought that a reflective subject is in a position to think if she has the experience. I call this claim, endorsed by conceptualists, the thesis of content congruence. Two principal lines of argument are put forward for this thesis. The first, 'simple' argument contends that a perceptual experience is a state in which it perceptually appears to the subject that things are thus and so; that a reflective subject who has an experience is in a position to think that things are thus and so; and that the subject in question, in doing so, thinks a thought with the same content as her experience. The second line of argument appeals to the role of perceptual experience in intentional explanation of observational beliefs. It makes the case that such explanation presumes that there is a non-trivial, non-vacuous law linking perceptual experiences with observational beliefs, and argues that an adherent of content congruence is significantly better placed to formulate such a law (consistently with her view) than her 'content nonconceptualist' opponent. The thesis of content congruence has often been associated in the literature with the thesis of state conceptualism, i.e. the claim that the representational capacities in virtue of the activation of which a perceptual experience has the content it has are conceptual. I reject the latter, and explain why we should not expect the denial of that claim, i.e. state nonconceptualism, to be incompatible with content congruence. I defend moreover the thesis of content congruence against the objection that it confuses sense and reference, and the objection that it leads to a viciously circular or otherwise inadequate account of observational or demonstrative concepts.