In a rare joint interview, Bill Gates and his father, Bill Gates Sr., talk to USA Today about their family relationship and their outlook on philanthropy.

The elder Mr. Gates serves as co-chairman of the Bill & Melinda Gates Foundation, started by his son in 1998, which is now the world’s largest charity.

And in a talk with The Wall Street Journal Eli Broad discusses at length his philanthropic work, which has included commitments of hundreds of millions of dollars to improving education and financing arts institutions in the Los Angeles area.

Mr. Broad contrasts East Coast and West Coast approaches to philanthropy and describes his giving as results-oriented “venture philanthropy” rather than “check-writing charity.”