All that is made perfect by progress perishes also by progress. - Blaise Pascal

All men naturally hate one another. They employ lust as far as possible in the service of the public weal. But this is only a pretence and a false image of love; for at bottom it is only hate.

There are only two kinds of men: righteous men who believe themselves sinners; the rest, sinners, who believe themselves righteous - Pascal

As to the objection that these rules are common in the world, that it is necessary to define every thing and to prove every thing, and that logicians themselves have placed them among their art, I would that the thing were true and that it were so well known... But so little is this the case, that, geometricians alone excepted, who are so few in number that they are a single in a whole nation and long periods of time, we see no others that know it.