Rene Descartes — "The first precept was never to accept anything for true which I did not clearly …"
The first precept was never to accept anything for true which I did not clearly know to be such.
The first precept was never to accept anything for true which I did not clearly know to be such.
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"I confess that I have never found in my experience that anything which I once clearly understood could afterwards be called into doubt by me."
"The existence of God is clearly demonstrated by the very idea of God."
"It is not enough to have a good mind; the main thing is to use it well."
"All that is solid melts into air."
"It is a mark of a truly great mind to be able to make a great discovery with few means."
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