sábado, janeiro 13, 2007

Pequenos contributos para uma melhor compreensão entre os povos

Vamos todos reconhecer que David Hume é um génio e aceitar que, nas nossas conversas/discussões/controvérsias, não voltaremos a cair nesta falácia:
"In every system of morality, which I have hitherto met with, I have always remark'd, that the author proceeds for some time in the ordinary way of reasoning, and establishes the being of a God, or makes observations concerning human affairs; when of a sudden I am surpriz'd to find, that instead of the usual copulations of propositions, is, and is not, I meet with no proposition that is not connected with an ought, or an ought not. This change is imperceptible; but is, however, of the last consequence. For as this ought, or ought not, expresses some new relation or affirmation, 'tis necessary that it shou'd be observ'd and explain'd; and at the same time that a reason should be given, for what seems altogether inconceivable, how this new relation can be a deduction from others, which are entirely different from it. But as authors do not commonly use this precaution, I shall presume to recommend it to the readers; and am persuaded, that this small attention wou'd subvert all the vulgar systems of morality ... "
Traduzido (e condensado) daqui para português: lembremo-nos que não podem ser logicamente obtidas conclusões não resultantes das premissas; e que, como tal, de proposições descritivas não pode logicamente resultar uma conclusão/proposição valorativa.

Sem comentários: