The universe is all flux or motion, divided into two immense concurrent streams of force, one active, the other passive; adapted one to the other, but each including many varieties. One of these is Object: the other is, sentient, cognizant, concipient, Subject. Object as well as Subject is, in itself and separately, indeterminate and unintelligible--a mere chaotic Agent or Patient. It is only by copulation and friction with each other that they generate any definite or intelligible result. Every such copulation, between parts adapted to each other, generates a twin offspring: two correlative and inseparable results infinitely diversified, but always born in appropriate pairs:[32] a definite perception or feeling, on the subjective side--a definite thing perceived or felt, on the objective. There cannot be one of these without the other: there can be no objective manifestation without its subjective correlate, nor any subjective without its objective. This is true not merely about the external senses--touch, taste, smell, sight, hearing--but also about the internal,--hot and cold, pleasure and pain, desire, fear, and all the countless variety of our feelings which have no separate names.[33] Each of these varieties of feeling has its own object co-existent and correlating with it. Sight, hearing, and smell, move and generate rapidly and from afar; touch and taste, slowly and only from immediate vicinity: but the principle is the same in all. Thus, _e.g._, when the visual power of the eye comes into reciprocal action with its appropriate objective agent, the result between them is, that the visual power passes out of its abstract and indeterminate state into a concrete and particular act of vision--the seeing a white stone or wood: while the objective force also passes out of its abstract and indeterminate state into concrete--so that it is no longer whiteness, but a piece of white stone or wood actually seen.[34] [Footnote 32: Plato, Theætêt. p. 156 A. [Greek: ô(s to\ pa=n ki/nêsis ê)=n, kai\ a)/llo para\ tou=to ou)de/n, tê=s de\ kinê/seôs du/o ei)/dê, plê/thei me\n a)/peiron e(ka/teron, du/namin de\ to\ me\n poiei=n e)/chon, to\ de\ pa/schein. E)k de\ tê=s tou/tôn o(mili/as te kai\ tri/pseôs pro\s a)/llêla gi/gnetai e)/kgona] plê/thei me\n a)/peira, di/duma de/--to\ me\n ai)sthêto/n, to\ de\ ai)/sthêsis], a)ei\ sunekpi/ptousa kai\ gennôme/nê meta\ tou= ai)sthêtou=.]] [Footnote 33: Plato, Theætêt. p. 156 B.] [Footnote 34: Plato, Theætêt. p. 156 E. [Greek: o( me\n o)phthalmo\s a)/ra o)/pseôs e)/mpleôs e)ge/neto kai\ o(ra=| dê\ to/te kai\ _e)ge/neto ou)/ ti o)/psis a)lla\ o)phthalmo\s o(rô=n_, to\ de\ xuggennê=san to\ chrô=ma leuko/têtos perieplê/sthê kai\ _e)ge/neto ou) leuko/tês au)=_ a)lla\ leuko/n, ei)/te xu/lon ei)/te li/thos ei)/te o(tiou=n xune/bê chrê=ma chrôsthê=nai tô=| toiou/tô| chrô/mati.]