thought, on its own, is not visible or tangible, however, when coalesced into DREAMs, they still lack a physical form, but can be observed, and any beings senses can perceive them based on the DREAM's base concept. BELIEFs can physically effect the world, and have a visible form based upon the concept that they originate from.
sorry to continue into the desc, but i like to be in depth.
