Most objects of vulgar admiration may be referred to certain general classes. There are, first, those which hold together by cohesion or by some organic unity, such as stone, timber, figs, vines or olives. The things which men, a shade more reasonable, admire are referred to the class which possesses animal life such as is seen in flocks and herds. When man's taste is still more cultured his admiration turns to things which can show a rational intelligence. But he admires this intelligence not as a universal principle, but only so far as he finds it expressed in art or industry, or, indeed, sometimes merely so far as it is exhibited by his retinue of artist slaves. But he who values rational intelligence as a universal thing, and as a social force, will care nothing for these other objects of admiration. He will, above all things, strive to preserve his own mind in all its rational and social instincts and activities; and to this end he will co-operate with any of his kind.