I think; therefore I am.
From Rene Descartes
An optimist may see a light where there is none, but why must the pessimist always run to blow it out?
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.
It is only prudent never to place complete confidence in that by which we have even once been deceived.
Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.
Divide each difficulty into as many parts as is feasible and necessary to resolve it.
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.
The greatest minds are capable of the greatest vices as well as of the greatest virtues.
A state is better governed which has few laws, and those laws strictly observed.
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