Note (return) — SA@NKARA'S INTRODUCTION (continued 4)

Perception is to be considered as similar to a dream and the like. The ideas present to our minds during a dream, a magical illusion, a mirage and so on, appear in the twofold form of subject and object, although there is all the while no external object; hence we conclude that the ideas of posts and the like which occur in our waking state are likewise independent of external objects; for they also are simply ideas.—If we be asked how, in the absence of external things, we account for the actual variety of ideas, we reply that that variety is to be explained from the impressions left by previous ideas408. In the beginningless samsâra ideas and mental impressions succeed each other as causes and effects, just as the plant springs from the seed and seeds are again produced from the plant, and there exists therefore a sufficient reason for the variety of ideas actually experienced. That the variety of ideas is solely due to the impressions left on the mind by past ideas follows, moreover, from the following affirmative and negative judgments: we both (the Vedântins as well as the Bauddhas) admit that in dreams, &c. there presents itself a variety of ideas which arise from mental impressions, without any external object; we (the Bauddhas) do not admit that any variety of ideas can arise from external objects, without mental impressions.—Thus we are again led to conclude that no outward things exist.