Common sense is the most widely shared commodity in the world, for every man is convinced that he is well supplied with it.
The greatest minds are capable of the greatest vices as well as of the greatest virtues.
Everything is self-evident.
When it is not in our power to follow what is true, we ought to follow what is most probable.
The first precept was never to accept a thing as true until I knew it as such without a single doubt.
There is nothing so strange and so unbelievable that it has not been said by one philosopher or another.