stylistic:style_transfer, stylistic:tone, information:classification
Yogācāra

The Yogācāra school (Yoga practice) was a Buddhist philosophical tradition which arose in between the 2nd century CE and the 4th century CE and is associated with the philosophers and brothers Asanga and Vasubandhu and with various sutras such as the Sandhinirmocana Sutra and the Lankavatara Sutra. The central feature of Yogācāra thought is the concept of vijñapti-mātra, often translated as "impressions only" or "appearance only". This has been interpreted as a form of Idealism or as a form of Phenomenology. Other names for the Yogācāra school are 'vijñanavada' (the doctrine of consciousness) and 'cittamatra' (mind-only).

Yogācāra thinkers like Vasubandhu argued against the existence of external objects by pointing out that we only ever have access to our own mental impressions, and hence our inference of the existence of external objects is based on faulty logic. Vasubandhu's Triṃśikā-vijñaptimātratā (The Proof that There Are Only Impressions in Thirty Verses), begins thus:

I. This is nothing but impressions, since it manifests itself as an unreal object, Just like the case of those with cataracts seeing unreal hairs in the moon and the like.

According to Vasubandhu then, all our experiences are like seeing hairs on the moon when we have cataracts, that is, we project our mental images into something "out there" when there are no such things. Vasubandhu then goes on to use the dream argument to argue that mental impressions do not require external objects to (1) seem to be spatio-temporally located, (2) to seem to have an inter-subjective quality, and (3) to seem to operate by causal laws. The fact that purely mental events can have causal efficacy and be intersubjective is proved by the event of a wet dream and by the mass or shared hallucinations created by the karma of certain types of beings. After having argued that impressions-only is a theory that can explain our everyday experience, Vasubandhu then appeals to parsimony - since we do not need the concept of external objects to explain reality, then we can do away with those superfluous concepts altogether as they are most likely just mentally superimposed on our concepts of reality by the mind. Yogācārins like Vasubandhu also attacked the realist theories of Buddhist atomism and the Abhidharma theory of svabhava. He argued that atoms, as conceived by the atomists (un-divisible entities), would not be able to come together to form larger aggregate entities, and hence that they were illogical concepts.

Inter-subjective reality for Vasubandhu is then the causal interaction between various mental streams and their karma, and does not include any external physical objects. The soteriological importance of this theory is that, by removing the concept of an external world, it also weakens the 'internal' sense of self as an observer which is supposed to be separate from the external world. To dissolve the dualism of inner and outer is also to dissolve the sense of self and other. The later Yogacara commentator Sthiramati explains this thus:

There is a grasper if there is something to be grasped, but not in the absence of what is to be grasped. Where there is nothing to be grasped, the absence of a grasper also follows, there is not just the absence of the thing to be grasped. Thus there arises the extra-mundane non-conceptual cognition that is alike without object and without cognizer.

Apart from its defense of an idealistic metaphysics and its attacks on realism, Yogācāra sources also developed a new theory of mind, based on the Eight Consciousnesses, which includes the innovative doctrine of the subliminal storehouse consciousness (Skt: ālayavijñāna).

Yogācāra thinkers also developed a positive account of ultimate reality based on three basic modes or "natures" (svabhāva). This metaphysical doctrine is central to their view of the ultimate and to their understanding of the doctrine of emptiness (śūnyatā).