Like our attitude to love, truth and goodness, we seem to be confident about knowing what beauty is - certain, even dogmatic - until we think hard about the idea, whereupon all confidence flies away.
I was already writing about the idea of a 'multiverse' in the 1970s, though I might have called it the 'pluriverse.' How was I to know it would turn out to be the standard model? Actually, I consider myself an enlightenment fossil.