It&#x27;s a paraphrase rather than a quote, of &quot;the theorems of a finitely-specified theory cannot be significantly more complex than the theory itself.&quot;<p><a href="http:&#x2F;&#x2F;www.sciencedirect.com&#x2F;science&#x2F;article&#x2F;pii&#x2F;S0196885804001277" rel="nofollow">http:&#x2F;&#x2F;www.sciencedirect.com&#x2F;science&#x2F;article&#x2F;pii&#x2F;S0196885804...</a>