We learn as much by others' failings as by their teachings. Examples of imperfection is just as useful for achieving perfection as are models of competence and perfection.

There are people so blind and self-absorbed in all matters that they always believe that, whatever they desire or think, they can impose their will on other people. Whatever bad reason they use to persuade others, these self-centered people are so caught up in the process that it seems to them all they have to do is to speak their wishes in a lofty and commanding tone of voice in order to convince everybody.

It is an admirable skill to able to sweeten a refusal with civil words which atone for the favor which we are not able to grant.

There are petty-minded people who cannot endure to be reminded of their ignorance because, since they are usually quite blind to all things, quite foolish, and quite ignorant, they never question anything, and are persuaded that they see clearly what in fact they never see at all, save through the darkness of their own dispositions.

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.

It is better that great peoples should seek out glory, or even vanity, in their deeds, than that they should remain indifferent . For even if they are not incited to act upon virtuous principles, at least there is the saving grace that they will do things they might not have done had not vanity prompted their actions.

To be too dissatisfied with ourselves is a weakness. To be too satisfied with ourselves is a stupidity.