Now these activities are done for many different motives. The most obvious and patent motive is that of supporting one's existence. People work at their jobs because they have to earn a livelihood. They have to support themselves and those who depend on them, and this needs a lot of activity, unless your father happens to be president of General Motors. There is also the motive of pleasure.
People go to a concert or a theater or build model airplanes because they enjoy doing so.
This is the second motivation for human activity. Lastly, we do certain things because we feel we have a duty to do them. We give money to charity, or help an elderly person down some steps, because we feel a call to what we know to be right. Now the need for a livelihood, the love of pleasure, and the call to duty are not the only motives for human conduct, but they are some of the most important. In many of the things we do, these motives are all mixed together.