Full Idea
Some powers are grounded and some are not. ...All derivative powers ultimately derive from ungrounded powers.
Gist of Idea
Some powers are ungrounded, and others rest on them, and are derivative
Source
George Molnar (Powers [1998], 8.5.2)
Book Reference
Molnar,George: 'Powers: a study in metaphysics', ed/tr. Mumford,Stephen [OUP 2003], p.140
A Reaction
It is tempting to use the term 'property' for the derivative powers, reserving 'power' for something which is basic. Molnar makes a plausible case, though.