Azure, green, purple, pearl, or downy gold,
Or all commix’d; they stand, with wings outspread,
Listening to catch the Master’s least command,
And fly through nature, ere the moment ends;
Numbers innumerable!—well conceived
By Pagan, and by Christian! O’er each sphere
Presides an angel, to direct its course,
And feed, or fan, its flames; or to discharge
Other high trusts unknown. For who can see
Such pomp of matter, and imagine, Mind, 890