Various theories are also erroneous, in which it has been sought to establish the relation between the passions and the will, temperament and character, passions and temperament being understood as vicious passions and evil temperament; that is, not in themselves, but in their antithesis to the rational will: hence the vain and paradoxical attempts to join together and harmonize virtue and vice. Thus it has been maintained that in certain vices are foreshadowed the virtues which will or can be developed from them; for instance, military valour in ferocity, industrial capacity in greed; whereas ferocity and greed are wilful acts and contradictions incapable of generating any virtue, as is seen in the customary cowardice of the ferocious and the ineptitude of the greedy and covetous. Such a connection of virtues and vices has on other occasions been presented as a mixture or co-temperament, and it has been affirmed that the vices enter into the composition of the virtues, as do poisons into the composition of medicines. Finally, virtue and vice have been placed in causal relation, and the causes of civil progress have been found in human vices. But the vices, as they are not the antecedents, so are they neither the ingredients nor the causes of the virtues. These are strength, those the lack of strength. It is generally affirmed that in every individual the virtues are accompanied by their correlative vices, but if this possess some approximate value as an empirical observation, strictly speaking it has none, because men can be conceived and are actually found, whose virtue, far from yielding to excesses and to vices, is eurythmic and temperate. But perhaps that common saying aims at something else that it fails of explaining well; namely, that every power has its impotence and every individual his limit; but this does not mean vice or defect; it is nothing but the tautological affirmation that the part is not the whole and the individual not the universal. [Sidenote: _The universal in the individual and education._]