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It is only prudent never to place complete confidence in that by which we have even once been deceived.
Your joy is your sorrow unmasked. And the self-same well from which your laughter rises was often-times filled with your tears.
Good sense is of all things in the world the most equally distributed, for everybody thinks he is so well supplied with it, that even those most difficult to please in all other matters never desire more of it than they already possess.
I know not if I was then a man dreaming I was a butterfly, or if I am now a butterfly dreaming I am a man.
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.
Nothing is more fairly distributed than common sense: no one thinks he needs more of it than he already has.
One cannot conceive anything so strange and so implausible that it has not already been said by one philosopher or another.
The first precept was never to accept a thing as true until I knew it as such without a single doubt.
The reading of all good books is indeed like a conversation with the noblest men of past centuries who were the authors of them, nay a carefully studied conversation, in which they reveal to us none but the best of their thoughts.
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