True merit does not depend on the times or on fashion. Those who have no other advantage than courtly manners lose it when they are away from court. But good sense, knowledge, and wisdom make their possessors knowledgeable and beloved in all ages and in all times.

Social intercourse, even friendship among most people, is a merely a business arrangement that lasts only so long as there is need.

The foolish acts of others ought to serve more as a lesson to us than an occasion to laugh at those who commit them.

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.

When High and Mighty people want to make us believe that they possess some good quality which they in fact do not have, it is dangerous to show that you doubt them; because, by removing their hope of deceiving the world, you also remove their desire to perform the good acts that might have arisen from their very pretensions.

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.

We would often rather seem dutiful to others than to succeed in our duties; and often we would rather tell our friends that we have done them good than to do good in actuality.