Full Idea
For Spinoza a substance is not a 'thing', but the power of actualising its own existence.
Gist of Idea
Substance is the power of self-actualisation
Source
report of Baruch de Spinoza (The Ethics [1675], I Pr 08) by Beth Lord - Spinoza's Ethics 1 P11
Book Reference
Lord,Beth: 'Spinoza's Ethics' [Indiana 2010], p.30
A Reaction
Does this say anything?