With reference to Charles Fourier, which of the following statements is correct?

I. He believed in the power of big industry.

II. His main interest was in making work pleasant for industrial workers.

III. Charles Fourier is known for being one of the founders of utopian socialism and a significant influence on Marx and Engels. 

IV. Fourier's philosophy was built around the idea of "passional attraction," which suggested that allowing people to freely pursue their passions would create a harmonious society.