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

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

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

A person has two passions for love and abhorrence. A big disposition to excessiveness has just a love, because it is more ardent and stronger.

The entire method consists in the order and arrangement of the things to which the mind's eye must turn so that we can discover some truth.

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

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