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.

Nothing can tell us so much about the general lawlessness of humanity as a perfect acquaintance with our own immoderate behavior. If we would think over our own impulses, we would recognize in our own souls the guiding principle of all vices which we reproach in other people; and if it is not in our very actions, it will be present at least in our impulses. There is no malice that self-love will not offer to our spirits so that we may exploit any occasion, and there are few people virtuous enough not to be tempted.

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 no more reason to accuse ourselves excessively of our failings than to excuse them overmuch. He who goes overboard in self-criticism often does so in order not to suffer others' criticisms, or else does so out of a kind of vanity that wishes to make others believe that he knows how to confess his faults.

Love is always master everywhere. It shapes the soul, the heart, and the mind wherever it exists. What matters is not the amount of love, but simply its existence in the mind and heart where it resides. And it truly appears that love is to the soul of the lover as the soul itself is to the body which it animates.

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.

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.