I would suggest... the idea of a work which should have for its object the analytic examination of the development of our intellectual faculties for each age. Now, I have aimed to present, in the work here reproduced, only an essay, only a particular example, of such an analysis, "which tends to show that the maximum of energy of the passions occurs about the age of twenty-five." The minimum is not then determined; and even when it shall be, by a sufficient number of observations, one will no more be able to apply it to any given individual in particular, than one could make use of a table of mortality to determine the period of his decease.
Adolphe QueteletRelated topics
able age development essay example given idea intellectual maximum mortality now number present should show table use workRelated quotes
Of errors and defects we certainly have not less than our full share, enough to keep the reformer awake, the statesman busy, and the country in a pretty lively state of agitation for some time to come. Perfection is an object to be aimed at by all, but it is not an attribute of any form of government. Mutability is the law for all. Something different, something better, or something worse may come, but so far as respects our present system and form of government, and the altitude we occupy, we need not shrink from comparison with any nation of our times. We are to day the best fed, the best clothed, the best sheltered and the best instructed people in the world.
Frederick Douglass
The lower classes of people in Europe may at some future period be much better instructed then they are at present; they may be taught to employ the little spare time they have in many better ways than at the ale-house; they may live under better and more equal laws than they have hitherto done, perhaps, in any country; and I even conceive it possible, though not probable, that they may have more leisure; but it is not in the nature of things, that they can be awarded such a quantity of money or substance, as will allow them all to marry early, in the full confidence that they shall be able to provide with ease for a numerous family.
Thomas Malthus
The consolidations need to be carried out with due regard to public interest and to the rights and established life of various communities in our country. It does not seem to me necessary that we endeavor to anticipate any final plan or adhere to an artificial and unchangeable project which shall stipulate a fixed number of systems, but rather we ought to approach the problem with such a latitude of action that it can be worked out step by step in accordance with a comprehensive consideration of public interest. Whether the number of ultimate systems shall be more or less seems to me can only be determined by time and actual experience in the development of such consolidations.
Calvin Coolidge
Arithmetic and geometry, according to Plato, are the two wings of the mathematician. The object indeed of all mathematical questions, is to determine the ratios of numbers, or of magnitudes ; and it may even be said, to continue the comparison of the ancient philosopher, that arithmetic is the mathematician's right wing; for it is an incontestable truth, that geometrical determinations would, for the most part, present nothing satisfactory to the mind, if the ratios thus determined could not be reduced to numerical ratios. This justifies the common practice, which we shall here follow, of beginning with arithmetic.
Jacques Ozanam
Markets are institutions that exist to facilitate exchange, that is, they exist in order to reduce the cost of carrying out exchange transactions. In an economic theory which assumes that transaction costs are nonexistent. markets have no function to perform, and it seems perfectly reasonable to develop the theory of exchange by an elaborate analysis of individuals exchanging nuts for apples on the edge of the forest or some similar fanciful example. This analysis certainly shows why there is a gain from trade, but it fails to deal with the factors which determine how much trade there is or what goods are traded.
Ronald Coase