He used to say something along the lines of "Don't hold Monero, use it".

He was basically trying to deny the number go up appeal of crypto investment, and argue that the main focus of Monero is it's usability, not it's potential for Lambos.  This was during the whole ICO surge and I think in some ways he was tying to differentiate XMR from all the thousands of projects who's seeming point was to enrich the developers/scammers.

I remember he was criticized for this position being a sort of reverse psychology play by some twitter personality who I think is a pretty big jerk.  But the point is certainly reasonable in a way.  And so is the saying.