Stumbled upon this yesterday or so:
https://www.youtube.com/watch?v=eZlbQqXBsn0
« I think one of the troubles of the world has been the habit of dogmatically believing something or other and I think all these matters are full of doubt and the rational man will not be too sure that he's right; I think we ought always to entertain our opinions to some measure of doubt » (Russel)