Sometimes we praise the way things used to be in order to blame the present, and we esteem what is no longer in order to scorn what is.

Study and research into truth often only serves to make us see by experience our natural ignorance.

Honest and sincere acts mislead the wicked and cause them to lose their path to their own goals, because mean-spirited people usually believe that people never act without deceit.

Self-love is almost always the ruling principle of our friendships. It makes us avoid all our obligations in unprofitable situations, and even causes us to forget our hostility towards our enemies when they become powerful enough to help us achieve fame or fortune.

There is nothing that does not have something perfect in it; and it is the happiness of good taste to be able to find this perfection in all things. But there is a natural malignity that often discovers a vice in the midst of several virtues, in order to reveal and proclaim the discovery to all the world - a quality that is more the mark of a naturally evil temperament than a superior sense of discrimination. And it is truly an evil lot, to pass one's life always feeding off the imperfections of others.

There is no one who cannot derive great help and great benefit from learning; but there are also only a few people who do not receive a great harm from the light and knowledge they have received by learning, unless they use their knowledge in a manner both fit and natural for them.

Good fortune almost always makes some change in a man's behavior - in his manner of speaking and acting. It is a great weakness to want to bedeck oneself in qualities which are not his own. If he esteemed virtue above all other things, neither the favors of fortune nor the advantages of position would change a man's face or heart.