2 quotes about unsubstantial follow in order of popularity. Be sure to bookmark and share your favorites!

He who knows that this body is like froth, and has learnt that it is as unsubstantial as a mirage, will break the flower-pointed arrow of illusion, and never see the king of death.

The Dhammapada

It's not an unsubstantial task to file and issue a patent. That's typically above and beyond the rest of the workload so we do have incentives to take on that additional workload.

Mark Durcan