The ties of virtue ought to be closer than the ties of blood, since the good man is closer to another good man by their similarity of morals than the son is to his father by their similarity of face.

One cannot always bestow all manner of things upon everybody. To refuse a request for just cause is as praiseworthy as to grant a request that is worthy. It is for this reason that the "no" of some people pleases more than the "yes" of others. A refusal accompanied by sweet words and a civil manner gives more satisfaction to a true heart than a favor given with bad grace.

Self-love makes us deceive ourselves in almost all matters, to censure others, and to blame them for the same faults that we do not correct in ourselves; we do this either because we are unaware of the evil that exists within us, or because we always see our own evil disguised as a good.

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.

There is a certain hidden mediocrity in those who are stationed above us in life, an ability to take liberties in their pursuit of pleasures and diversions, without injuring the honor and respect we owe to them.

In knowledge of human affairs, we should never allow our minds to be enslaved by others by subjecting ourselves to their whims. We must maintain freedom of thought, and never accept anything of purely human authority into our heads. When we are presented with a diversity of opinions, we must choose, if we can; if we cannot, we must remain in doubt.