The purest literary talent appears at one time great, at another time small, but character is of a stellar and undiminishable greatness.    From Wordnik.com.  [Essays — Second Series] Reference

From It, are the godlike powers of the angelic ranks; from It, they have their immutability, and all their intellectual and immortal perpetual movements; and their equilibrium itself, and their undiminishable aspiration after good, they have received from the Power boundless in goodness; since.    From Wordnik.com.  [Dionysius the Areopagite, Works (1897)] Reference

Sharing that undiminishable store, 175.    From Wordnik.com.  [The Complete Poetical Works of Percy Bysshe Shelley] Reference

Sharing that undiminishable store.    From Wordnik.com.  [The Complete Works of Percy Bysshe Shelley — Volume 3] Reference