Instill respect for teachers.

The truth is I would do my job for free! I love it every day. If you can possibly choose a vocation that's an avocation, a job that's really a hobby, then you'll be way ahead of the game. You should not pick an occupation because your think your parents want you to do it, or because you think it's the noble thing to do. You should only pick a job because it turns you on.

One must learn how to be black in America.

The first step toward tolerance is respect and the first step toward respect is knowledge.

Very few, if any, first-generation black or white or Asian kids will pursue a Ph.D. They'll pursue the professions for economic security. Many will go to law school and/or business school.

All of the guests on 'Faces of America' were deeply moved by what we revealed about their ancestry. We were able to trace the ancestry of Native American writer Louise Erdrich back to 438 A.D. We found that Queen Noor is descended from royalty, and that's before she married King Hussein of Jordan.

So when you do your family tree and Margaret Cho does hers, and... Wanda Sykes and John Legend... we're adding to the database that scholars can then draw from to generalize about the complexity of the American experience. And that's the contribution that family trees make to broader scholarship.