X
In so far as men are carried away by envy or any emotion of hatred towards one another, so far are they contrary to one another, and consequently so much the more are they to be feared, as they have more power than other individuals of nature.
XI
Minds, nevertheless, are not conquered by arms, but by love and generosity.
XII
Above all things is it profitable to men to form communities and to unite themselves to one another by bonds which may make all of them as one man; and absolutely, it is profitable for them to do whatever may tend to strengthen their friendships.
XIII
But to accomplish this skill and watchfulness are required; for men are changeable (those being very few who live according to the laws of reason), and nevertheless generally envious and more inclined to vengeance than pity. To bear with each, therefore, according to his disposition and to refrain from imitating his emotions requires a singular power of mind. But those, on the contrary, who know how to revile men, to denounce vices rather than teach virtues, and not to strengthen men's minds but to weaken them, are injurious both to themselves and others, so that many of them through an excess of impatience and a false zeal for religion prefer living with brutes rather than amongst men; just as boys or youths, unable to endure with equanimity the rebukes of their parents, fly to the army, choosing the discomforts of war and the rule of a tyrant rather than the comforts of home and the admonitions of a father, suffering all kinds of burdens to be imposed upon them in order that they may revenge themselves upon their parents.
XIV
Although, therefore, men generally determine everything by their pleasure, many more advantages than disadvantages arise from their common union. It is better, therefore, to endure with equanimity the injuries inflicted by them, and to apply our minds to those things which subserve concord and the establishment of friendship.