It is only prudent never to place complete confidence in that by which we have even once been deceived.
René DescartesTags: truth deception lies trust
Bad books engender bad habits, but bad habits engender good books.
René DescartesI had become aware, as early as my college days, that no opinion, however absurd and incredible can be imagined, that has not been held by one of the philosophers.
René DescartesSo blind is the curiosity by which mortals are possessed, that they often conduct their minds along unexplored routes, having no reason to hope for success, but merely being willing to risk the experiment of finding whether the truth they seek lies there.
René DescartesI suppose therefore that all things I see are illusions; I believe that nothing has ever existed of everything my lying memory tells me. I think I have no senses. I believe that body, shape, extension, motion, location are functions. What is there then that can be taken as true? Perhaps only this one thing, that nothing at all is certain ... But I cannot forget that, at other times I have been deceived in sleep by similar illusions; and, attentively considering those cases, I perceive so clearly that there exist no certain marks by which the state of waking can ever be distinguished from sleep, that I feel greatly astonished; and in amazement I almost persuade myself that I am now dreaming ... I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake ... There is nothing more ancient than the truth.
René DescartesDubito, ergo cogito, ergo sum.
(English: "I doubt, therefore I think, therefore I am")
I doubt, therefore I think, therefore I am.
René DescartesThe first precept was never to accept a thing as true until I knew it as such without a single doubt.
René DescartesThe last rule was to make enumerations so complete, and reviews so comprehensive, that I should be certain of omitting nothing.
René DescartesTags: complete comprehensive omission
No hay nada repartido de modo más equitativo en el mundo que la razón: todo el mundo está convencido de tener suficiente.
René DescartesTags: filosofía descartes razón argumento razon
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