Labor and needs cultivate human beings. This happens in two ways.

Cultivating thought:

Whoever deals with many things learns a lot. He gathers knowledge. He thinks faster. He understands complicated connections. His language grows richer too.

Cultivating action:

Whoever works gets used to being busy. He learns to adjust to the material. And above all, he learns to adjust to the wishes of others. Through this discipline he becomes skilled. He can do what everyone needs.

Skill and clumsiness:

The clumsy person always turns out something other than he wanted. He is not master of his own doing. The skilled worker makes the thing as it ought to be. In him the hands obey the purpose.

The barbarian, by contrast, is lazy. He broods dully to himself. Practical culture means that you need to be busy and are used to it.

Summary: Labor cultivates human beings. It trains their thinking and their doing. Whoever works becomes skilled and gets used to meaningful activity.