A human being develops by overcoming sufferings. Sufferings helped him to invent machines and change some controls of social relations. Many things were changing during tens of thousands of years, except people themselves. Their attributes weren’t changing, though of course they became cleverer.
Today we find that all our attempts to change social patters, develop science, and invent new, more complicated mechanisms, don’t make a person happier. Even if it’s possible to provide everyone with food, clothing, and housing, a human being won’t be happy. A person still feels he remains empty inside.