Diatribe de Prodigiosis Crucibus

[destined] to adhere to their seeds, which, although they are contained within the most fertile bosom of nature and the class of sensible things, nevertheless bring forth the occult and hidden causes of their powers and actions, known only to those whom the Father of lights has blessed with this inestimable gift of the intellect; and these are what the Philosopher calls θαύματα τῆς φύσεως [wonders of nature], and the Latins call the miracles of nature, and these are especially those which fall into controversy regarding strife and friendship, or the sympathy and antipathy of things. Above this is another class which we properly name τὸ θεῖον [the Divine], not implanted in things from the first birth of the world, not perpetual and extended everywhere by a constant and perennial propagation of nature, but rather bound to certain places, times, or even sensible images for the good of man in a completely new and unusual way, and it contains all that which, in man the microcosm or in the encompassing ambit of the whole world, deviates from that common species of nature and customary law, and excites the senses and minds of mortals with admiration for itself; which the Greeks call τεράτων [portents], and the Latins call monsters, ostents, prodigies—

What are the miracles of nature?

Monsters and prodigies.