ТРИСВАБХАВА

Importance of the Subject of the Treatise
The theory of the three natures has special importance in the subject matter of the Yogacdra school. Extrinsically, that importance is manifested in the fact that the same subject is treated in many important works of the school and many references to it are found in them. Intrinsically the importance of the three natures' theory in the idealistic school is evident, since two of these natures, the "dependent" one (paratantra) and the "imaginary" one (parikalpita), constitute the empirical reality, and the third one, the "absolute" nature (parinispanna), is the absolute reality, the Absolute. To study these three natures means to study the empirical reality and the Absolute; to define the esence of these three natures is to define the essence of the empirical reality and of the Absolute; to establish the relation between the three natures is to establish the relation that unites the empirical reality and the Absolute, and to show the mechanism through which from the dependent nature the imaginary one is produced, is to show the process through which from the empirical mind and only from the empirical mind the perceptible world is created. In this way the essential problems of the Yogacdra school are reunited in the theory of the trisvabhava.

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Since the absolute nature exists with non-duality, but it is only non-existence of duality, therefore it is considered as something whose characteristic is being and non-being.

vāsanā     impression of anything remaining unconsciously in the mind; the
              present consciousness of past perceptions; knowledge derived
               from memory125