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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"Except our own thoughts, there is nothing absolutely in our power."
"I have never found anything in the works of the ancient philosophers that compares to the certainty I have found in mathematics."
"It is a mark of a truly great mind to be able to make a great discovery with few means."
"The difference between us is that I am a man of the world, and you are a man of books."
"He who has a firm and stable mind will find that in all conditions of life he can be master of himself."
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