Largely through recent researches among the American aborigines, it has been shown that decorative and many if not all other esthetic concepts normally arise in symbolism, gradually expand in conventionism, and eventually mature in a realism which is itself the source of ever-extending esthetic motives; and the observations on the lowly Seri afford opportunity for somewhat extending the generalizations based on higher tribes.
When peoples of unequal cultural development are compared, it is commonly found that the higher are the more independent in action and thought: thus, advanced peoples make conquest of nature for their own behoof, while primitive peoples are largely creatures of environment; Caucasian citizens are self-conscious lawmakers, while Amerind tribesmen are semiconsciously dominated by mysteries fearsomely interpreted by their shamans; and, in general, enlightened men think and speak freely, come and go as they like, and discard the badges of conventionism, while savages are constrained by customs carrying the power of law, controlled by precedent, and clothed in hierarchic regalia. So, too, when a particular series of tribes are compared, it is found that those of higher culture (or wider knowledge) are the more independent, the more given to essays in social and industrial and other lines of activity, and hence the more varied in esthetic and economic motives: thus, the several Iroquoian tribes integrated the knowledge proper to each, and thus made themselves an intellectual and physical power able to eliminate or assimilate the isolated tribes on their borders; the sages of the Siouan stock induced the warriors of their leading tribes to combine in a circle of seven council fires, which grew into the great Dakota confederacy and soon gained strength to dominate the entire northern plains; but while these and other federations were pushing forward on the way leading to feudalism and thence to national organization, the self-centered California tribes consecrated their tongues to their own kindred, thereby stifling culture at its source and virtually leashing themselves unto the acorn-bearing oaks of their respective glades. Still more striking are the differences in independence revealed by a comparison of human and subhuman organisms; for the humans are immeasurably freer and more spontaneous in thought and action than even the highest beasts: thus, the Seri blood-bearer applies, renews, and elaborates her face-mark at will, while the antelope and the raccoon unconsciously develop their standard-marks through the tedious operation of vital processes regulated under the cruel law of survival; men make their beds according to the dictates of judgment, while the half-artificialized dog lies down in accordance with a hereditary custom which has been needless for a hundred generations; and the very essence of human activity is volitional choice (or artificial selection), while the keynote of merely organic agency is the nonvolitional chance of natural selection. No less striking are the differences found on comparing other realms of nature, in which the higher are invariably characterized by the greater independence; the animal realm is distinguished from the vegetal realm mainly by the possession of volitional motility; while the vegetal is distinguished from the mineral realm chiefly by those better selective powers exemplified in vital growth. The several comparisons seem to define that course of volitional development arising in the chemical and mechanical affinities of the mineral realm, burgeoning in simple vitality, multiplying in the motility of animal life, greatly expanding in the collective activity of demotic organization, and culminating in the conquest of nature through the mind-guided powers of enlightened mankind. Expressed briefly, this course of development may be characterized as the progressive passage from _automacy_ to _autonomy_.