Jack Hope launched his plumbing company to help him pay for his master's degree in philosophy.

But Hope Plumbing was so lucrative that by the time he graduated, Jack was making as much as might as a tenured college professor. So he stuck with plumbing. Today, that small startup has grown into a company with more than 40 employees and revenue projected to top $6 million this year.

But that doesn't mean Jack has left philosphy behind. Host Mason King asks him just how philosphy plays into his management style and about he approaches recruiting and retaining plumbers, the biggest challenge in his business.