I'm having an extremely hard time understanding this quote. Its premises seem to contradict themselves.
How can a mind be original (not banal) if everything has been said and all knowledge is banal?
Only the set of beliefs that are actually routinely expressed can be considered banal; no matter if someone else has already said something, if it occurs to me organically, then it's probably useful.
The implication is that connections between data are made by minds, and that minds that are not banal can make new and interesting connections between data.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.