“The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once.”
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The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge.
I am indeed amazed when I consider how weak my mind is and how prone to error.
I hope that posterity will judge me kindly, not only as to the things which I have explained, but also to those which I have intentionally omitted so as to leave to others the pleasure of discovery.
I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.
