 Things are not quite this simple, however. First, it is important to note two levels to Vasubandhu’s “idealism.” The first level points to an analysis of what appears in perception. Vasubandhu says that everything that we ordinarily ascribe existence in the world—such as a self or an object—is actually only mental. Tables and nebulae and eyes are mental fabrications that have no existence apart from their “shape” (ākāra), the way they  appear.[45]  The second level points to the causal story that brings about such appearances. Along with other Yogācārins, Vasubandhu argues that that causal story too is only mental. Perception, in the form of active sensory and mental consciousnesses, is caused by the “storehouse consciousness” (ālayavijñāna), which stores, in mental form, the seeds of all of our future experiences. The storehouse is constantly replenished, because new “seeds” (bīja) are created every time we enact a morally significant action (karma).