There are two types of people in the world. Although they have equal degrees of health and wealth and the other comforts of life, one becomes happy, the other becomes miserable. This arises from the different ways in which they consider things, persons, and events, and the resulting effects upon their minds. One is said to be optimistic and the other pessimistic about everything around them.

People who are to be happy fix their attention on the conveniences of things, the pleasant parts of conversation, the well-prepared dishes, the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the contrary things. Therefore, they are continually discontented themselves. By their remarks, they sour the pleasures of society, offend many people, and make themselves disagreeable everywhere.