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Mathematics, like dialectics, is an instrument of the inner higher sense, while in practice it is an art like rhetoric. For both of these, nothing has value but form; content is immaterial. Whether mathematics is adding up pennies or guineas, whether rhetoric is defending truth or falsehood, makes no difference to either.
I confess that I do not understand the principle on which the power to fix a minimum for the wages of women can be denied by those who admit the power to fix a maximum for their hours of work. I fully assent to the proposition that here as elsewhere the distinctions of the law are distinctions of degree, but I perceive no difference in the kind or degree of interference with liberty, the only matter with which we have any concern, between the one case and the other. The bargain is equally affected whichever half you regulate…. It will need more than the Nineteenth Amendment to convince me that there are no differences between men and women, or that legislation cannot take those differences into account.
It will be seen that I look at the term species, as one arbitrarily given for the sake of convenience to a set of individuals closely resembling each other, and that it does not essentially differ from the term variety, which is given to less distinct and more fluctuating forms. The term variety, again, in comparison with mere individual differences, is also applied arbitrarily, and for mere convenience sake.
Every word instantly becomes a concept precisely insofar as it is not supposed to serve as a reminder of the unique and entirely individual original experience to which it owes its origin; but rather, a word becomes a concept insofar as it simultaneously has to fit countless more or less similar cases — which means, purely and simply, cases which are never equal and thus altogether unequal. Every concept arises from the equation of unequal things. Just as it is certain that one leaf is never totally the same as another, so it is certain that the concept "leaf" is formed by arbitrarily discarding these individual differences and by forgetting the distinguishing aspects.
Looked at from the standpoint of the ultimate result, there was little real difference to the Indian whether the land was taken by treaty or by war.... No treaty could be satisfactory to the whites, no treaty served the needs of humanity and civilization, unless it gave the land to the Americans as unreservedly as any successful war.