Halakhah do Koheleta 5:9

People have varying character traits. Some people are angry by nature, forever bursting with rage, then there are others who are tranquil who never become angry, or who become angry [only] once in many years. [You will find] a man who is extremely haughty, and another who is extremely humble. Some are lustful, their souls never satisfied with their unbridled cravings, others possess a very pure heart, and have no desire even for little things which are required for physical well-being. Some people have a voracious hunger for wealth and are not satisfied with all the money in the world, as it is written, "The person who loves money will not be satisfied with money."¹Ecclesiastes 5:9. Others have very modest desires, and are satisfied with little which does not even fill their needs, and [yet] make no effort to earn a livelihood. Some will afflict themselves with hunger and accumulate money this way, and [the little] they eat of their own [food] causes them distress. Others spend all their money [wastefully.] It is the same with all other character traits and concepts, as for example, the cheerful and the gloomy, the miser and the noble hearted, the cruel and the compassionate, the gentle and the hard-hearted and so on.