Which tells us that time is worth more than money ( u can make the calculation) most people however give away their time by serving a master (known as the boss) for money (very little usually). They do so because they have a slave mentality. They believe they Must give over their most precious commodity, Time.
This is why Rav Yisroel Karduner Z"tzl praised Saba Z"tzl for never getting the education (trade) to be someone else's slave.
Na Nach Nachma Nachman MeUman!