Full Idea
Processes without substantial entities are perfectly feasible in the conceptual order of things, but substantial entities without processes are effectively inconceivable.
Gist of Idea
Processes without entities are possible, but there can't be entities without processes
Source
Nicholas Rescher (Process Metaphysics [1996], 2.5)
A Reaction
Hard to disagree with this well-made argument in favour of processes as more basic. Russell observed that nothing seems to count as an object in the centre of the sun. Physics reveals a rock to be a flurry of minute activity.
Book Reference
Rescher,Nicholas: 'Process Metaphysics' [SUNY 1996], p.46