Rene Descartes — "The first precept was never to accept a thing as true until I knew it as such wi…"
The first precept was never to accept a thing as true until I knew it as such without a single doubt.
The first precept was never to accept a thing as true until I knew it as such without a single doubt.
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"All that is solid melts into air."
"The preservation of health has always been the principal end of my studies."
"I am a thinking substance, that is, a mind, or soul, or intellect, or reason."
"I found myself constrained to believe that there are certain principles which the human mind spontaneously accepts as true."
"It is not enough to know, one must also apply; it is not enough to wish, one must also do."
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