Pettiness of mind, ignorance and presumption are the cause of stubbornness, because stubborn people only want to believe what they themselves can imagine, and they can imagine very few things.

We nearly always make ourselves masters of those whom we know well, because he who is thoroughly understood is in some sense subject to those who understand him.

Mean-spirited mediocrities, especially those with a smattering of learning, are the most likely to be opinionated. Only strong minds know how to correct their opinions and abandon a bad position.

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 are many people who are so inclined to say "no" that the "no" always precedes whatever we say to them. This negative quality makes them so disagreeable that, even if they do what we want them to or agree with what we say, they always lose the pleasure that they might have received had they not started off so badly.

Often our good deeds make enemies for us, and the ungrateful person despises us on two counts; for he is not only unwilling to acknowledge the gratitude he owes us: he does not want to have his benefactor as witness to his thankless behavior.

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.