As luck or Providence would have it, I was just listening to an old episode of the excellent Mormon Stories podcast that was a conversation with Gregory Prince, the author of David O. McKay and the Rise of Modern Mormonism.
I have heard this quote from the lesson:
President David O. McKay explained: “Next to the bestowal of life itself, the right to direct that life is God’s greatest gift to man. … Freedom of choice is more to be treasured than any possession earth can give”