I saw an interview many years ago, with The Stones, on the now defunct satellite channel "Bravo". It was from 1968 and the thing that struck me most forcibly was just how damn intelligent they were. Especially Mick Jagger. Coherent, rational, deep thinking and highly articulate, even on the subject of drug taking. Didn't necessarily agree with them, but I'd have found it difficult to present an effective rebuttal to the assertions being made. Compare that to some of the half baked idiots of later and present eras.
I'd have enjoyed debating with them.