 | George Boole - 1854 - 464 páginas
...transferable. * = limited in supply. p = productive of pleasure. r = preventive of pain. Now it is plain from the nature of the subject, that the expression,...if not productive of pleasure, preventive of pain." Thus the class of things which the above expression, taken alone, would define, woidd consist of all... | |
 | George Boole - 1854 - 442 páginas
...transferable. * = limited in supply. p = productive of pleasure. r = preventive of pain. Now it is plain from the nature of the subject, that the expression,...if not productive of pleasure, preventive of pain." Thus the class of things which the above expression, taken alone, would define, would consist of all... | |
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Either productive of pleasure or preventive of pain," in the above definition, is meant to be equivalent to " Either productive of pleasure; or, if not productive of pleasure, preventive of pain." Thus the class of things which the above expression, taken... 