The principle of getting rich: how to create sustainable income

Many people are afraid of uncertain income at work, and office workers are eager to find double salaries. They also have to work hard after work, thinking that they can stay away from poverty. In fact, no matter how many jobs you hold concurrently, the income gained by increasing working hours alone will never help you get rid of poverty.

Koch Industries Group

Koch industries, headquartered in Kansas, USA, is the largest unlisted company in the world.