Self-love is even deceived by self-love, because by looking out for our own interests and disregarding those of other people, we lose the advantage that comes with the exchange of favors.

We often value the exterior and superficial aspect of things more than their inner reality. Bad manners taint everything even justice and reason. The 'how' of things matters most, and even the most disagreeable matters can be sweetened and gilded over with the proper appearance. Such is the bias and the weakness of the human mind.

We need not regard what good a friend has done us, but only his desire to do us good.

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.

There is a certain imperiousness, in the manner of speaking and in actions, which makes itself felt everywhere, and soon wins attention and respect. This commanding quality is useful in all affairs, and even for obtaining what we ask for.

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.

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.