My favorite Turnbull quote came from a match in 1977 (?) when she beat Virginia Wade in Atlanta.
By the sound of things Wendy and Virginia were having a post-match press conference side by side. Wade was making her excuses (something like "Wendy played well, but I was below form, etc).
Turnbull then piped up: (and I'm paraphrasing) "Virginia doesn't believe she should ever lose to anybody, including God"