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.

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• Rene Descartes:

  The reading of all good books is like a conversation with the finest minds of past centuries.

• Rene Descartes:

  Divide each difficulty into as many parts as is feasible and necessary to resolve it.

• Rene Descartes:

  Travelling is almost like talking with those of other centuries.

• Rene Descartes:

  The senses deceive from time to time, and it is prudent never to trust wholly those who have deceiv

• Rene Descartes:

  It is not enough to have a good mind; the main thing is to use it well.

• Rene Descartes:

  I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awa

• Rene Descartes:

  An optimist may see a light where there is none, but why must the pessimist always run to blow it o

• Rene Descartes:

  I think; therefore I am.

• Rene Descartes:

  When it is not in our power to follow what is true, we ought to follow what is most probable.

• Rene Descartes:

  Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-e