does not this precisely mean that it never ceases to be itself, in other words that its one form is an invincible formlessness? In no other sense has Plato’s dictum any value
Plotinus argues that Matter’s constitutive evasion of every determinate shape is itself a kind of permanent identity — its ‘one form’ is an absolute, invincible formlessness.
, The Six Enneads, 270thesis