In an interview in the September 1-8, 1999 issue of the San Francisco alternative newspaper, SF Weekly, Blass repeatedly resisted attempts by his interviewer to get him to admit to having religious beliefs. Blass said, "I have a firm belief in such things as, you know, the water, the Earth, the trees and sky. And I'm wondering, it is increasingly difficult to find those elements in nature, because it's nature I believe in rather than some spiritual thing."
The interviewer later re-introduced the topic of religion toward the end of the interview:
SFWeekly: You're not a religious man?
Bill Blass: No. And I do suppose that science has taken, to a large extent and for a number of people, has taken the place of religion.
SFW: What do you mean by that?
BB: That one can have more belief in scientific cures or scientific miracles than you do in God miracles. It's inevitable that we will eventually diffuse into nothingness...