Although my knowledge grows more and more, nevertheless I do not for that reason believe that it can ever be actually infinite, since it can never reach a point so high that it will be unable to attain any greater increase.

I am indeed amazed when I consider how weak my mind is and how prone to error.

He lives well who is well hidden.

The first precept was never to accept a thing as true until I knew it as such without a single doubt.

For I found myself embarrassed with so many doubts and errors that it seemed to me that the effort to instruct myself had no effect other than th eincreasing discovery of my own ignorance

God alone is the author of all the motions in the world.

There is nothing so strange and so unbelievable that it has not been said by one philosopher or another.