So also the universe, which consists of mind and its modifications, is of five kinds, entitled (1.) the sensational, (2.) the perceptional, (3.) the affectional, (4.) the verbal, and (5.) the impressional. Of these, the sensible world (_rúpa-skandha_) is the sense organs and their objects, according to the etymology, viz., that objects are discriminated (_rúpyante_) by these. The perceptional world is the stream of subject-recognitions and of presentments of activity. The affectional world is the stream of feelings of pleasure and pain generated by the two aforesaid worlds. The verbal (or symbolical) world is the stream of cognitions conversant about words--the words "cow," and so forth. The impressional world is the miseries, as desire, aversion, &c., caused by the affectional world, the lesser miseries, as conceit, pride, &c., and merit and demerit. Reflecting, therefore, that this universe is pain, an abode of pain, and an instrument of pain, a man should acquire a knowledge of the principles, the method of suppressing this pain. Hence it has been said-- "The principles sanctioned by Buddha are to the saint the four methods of suppressing the aggregate of pain."[36] In these words the sense of pain is known to every one; the "aggregate" means the cause of pain. This aggregate is twofold, as (1.) determined by concurrence; or (2.) determined by causation. Of these, there is an aphorism comprising the aggregate determined by concurrence, "which other causes resort to this effect;" the condition of these causes thus proceeding is concurrence; the concurrence of causes is the result of this only, and not of any conscious being,--such is the meaning of the aphorism. To exemplify this. A germ, caused by a seed, is generated by the concurrence of six elements. Of these, earth as an element produces hardness and smell in the germ; water as an element produces viscidity and moisture; light as an element produces colour and warmth; air as an element produces touch and motion; ether as an element produces expansion and sound; the season as an element produces a fitting soil, &c. The aphorism comprising the aggregate determined by causation is: "With the Tathágatas the nature of these conditions is fixed by production, or by non-production; there is continuance as a condition, and determination by a condition, and conformity of the production to the cause;" that is to say, according to the doctrine of the Tathágata Buddhas, the nature of these conditions, that is, the causal relation between the cause and effect, results from production or from non-production. That which comes into being, provided that something exists, is the effect of that as its cause; such is the explanation of the nature (or causal relation). Continuance as a condition is where the effect is not found without its cause. The (abstract) affix _tal_ (in the word _sthititā_) has the sense of the concrete. Determination