Now, there are so many from which to choose...where is one to start?
Well, since I'm an old-timer, I must by default cast my vote for Clayton J. Woodworth, that inspired author and editor of the Golden Age who single-handedly warned the world about the dangers of aluminum cookware and vaccinations, among so many other things.
Only once in a generation comes along a man with such inspired insights as to baffle the minds of mere ordinary humans.