The three natures. {I} The three natures of perception in Yoga^ca^ra: （1） The nature of existence produced from attachment to illusory discrimination. The mind of mistakenly assigning a real essence to those things that are produced from causes and conditions and have no true essence， and the appearance of that mistaken world （parikalpitah-svabha^va; bianji suoyixing 遍计所执性）. （2） The nature of existence arising from causes and conditions. All existence is produced according to cause （paratantra-svabha^va; 依他起性; yitaqixing） . （3） The nature of existence being perfectly accomplished; the highest state of existence conforming to ultimate reality （parinispanna-svabha^va; yuanchengshi xing 圆成实性; ）.［成唯识论T 1585.31.45c］{II} The division of all elemental constructs into three moral qualities: （1） That which produces goodness 善. （2） That which produces evil 恶 and （3） That which is neutral 无记， producing neither good nor evil. The neutral category is further subdivided into two categories of impedimentary neutrality 有覆无记 and non-impedimentary neutrality 无覆无记. The afflictions 烦恼 are included in the evil category.［俱舍论、 T 1558.29.7b］