The cruel lightning of the sword of Brennus had illumined the night, setting Rome or Delphi on fire.
We have shown that the direct observation of the origin of new characters in palaeontology brings them within that domain of natural law and order to which the evolution of the physical universe conforms. The nature of this law, which, upon the whole, appears to be purposive or teleological in its operations, is altogether a mystery which may or may not be illumined by future research.
the partially illumined portion - is called the penumbra.
mercifully grant, that as these lights enkindled with visible fire dispel nocturnal darkness, so our hearts illumined by invisible fire," &c. (Missale Rom.).