I didn't see it.
Others who chased down that rabbit hole didn't find it either.
Hmmmmmm.....
Of course Julian Huxley (1887-1975) was an evolutionist, eugenicist and atheist, so perhaps in a careless moment he might have said something similar.
Still it's remarkable that the alleged source for this alleged quote remains so... elusive.
The late Dr. Kennedy, in one of his archived sermons, quoted what Huxley said on an NPR TV show. That probably won’t be good enough for you. Sorry. That’s all I can tell you. In closing, may I invite you to read the book of Romans and the Gospel of John, in the New Testament. Have a nice eternity.
I just realized I erred in my last reply. I said NPR. Dr. Kennedy hardly saw Huxley on the radio. No, it was on the TV arm of Public Broadcasting a few years before Huxley died.
Regards.