“The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge.”
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The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once.
I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.
If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.
I am indeed amazed when I consider how weak my mind is and how prone to error.
