It is not enough to have a good mind; the main thing is to use it well. Read Summary
An optimist may see a light where there is none, but why must the pessimist always run to blow it out? Read Summary
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. Read Summary
Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it. Read Summary
Each problem that I solved became a rule, which served afterwards to solve other problems. Read Summary
The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge. Read Summary
In order to improve the mind, we ought less to learn, than to contemplate. Read Summary
I think; therefore I am. Read Summary
A state is better governed which has few laws, and those laws strictly observed. Read Summary
The reading of all good books is like a conversation with the finest minds of past centuries. Read Summary
I am indeed amazed when I consider how weak my mind is and how prone to error. Read Summary
Except our own thoughts, there is nothing absolutely in our power. Read Summary
Perfect numbers like perfect men are very rare. Read Summary
Everything is self-evident. Read Summary
There is nothing so strange and so unbelievable that it has not been said by one philosopher or another. Read Summary
One cannot conceive anything so strange and so implausible that it has not already been said by one philosopher or another. Read Summary
Travelling is almost like talking with those of other centuries. Read Summary
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. Read Summary
The greatest minds are capable of the greatest vices as well as of the greatest virtues. Read Summary
The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once. Read Summary