This scene from book 5 of Lucan's Pharsalia is placed here for ease of reference for the discussion in this blog post. It's the story of Amyclas and Caesar that is alluded to in Paradiso 11.
Fortune for his guide,
Alone he passes on, and o'er the guard
Stretched in repose he leaps, in secret wrath
At such a sleep. Pacing the winding beach,
Fast to a sea-worn rock he finds a boat
On ocean's marge afloat. Hard by on shore
Its master dwelt within his humble home.
No solid front it reared, for sterile rush
And marshy reed enwoven formed the walls,
Propped by a shallop with its bending sides
Turned upwards. Caesar's hand upon the door
Knocks twice and thrice until the fabric shakes.
Amyclas from his couch of soft seaweed
Arising, calls: ' What shipwrecked sailor seeks
'My humble home? Who hopes for aid from me,
' By fates adverse compelled? ' He stirs the heap
Upon the hearth, until a tiny spark
Glows in the darkness, and throws wide the door.
Careless of war, he knew that civil strife
Stoops not to cottages. O! happy life
That poverty affords! great gift of heaven
Too little understood! what mansion wall,
What temple of the gods, would feel no fear
When Caesar called for entrance? Then the chief:
' Enlarge thine hopes and look for better things.
' Do but my bidding, and on yonder shore
' Place me, and thou shalt cease from one poor boat
' To earn thy living; and in years to come
' Look for a rich old age: and trust thy fates
' To those high gods whose wont it is to bless
' The poor with sudden plenty.' So he spake
E'en at such time in accents of command,
For how could Caesar else? Amyclas said,
''Twere dangerous to brave the deep to-night.
' The sun descended not in ruddy clouds
' Or peaceful rays to rest; part of his beams
' Presaged a southern gale, the rest proclaimed
' A northern tempest; and his middle orb,
' Shorn of its strength, permitted human eyes
' To gaze upon his grandeur; and the moon
' Rose not with silver horns upon the night
' Nor pure in middle space; her slender points
'Not drawn aright, but blushing with the track
' Of raging tempests, till her lurid light
'Was sadly veiled within the clouds. Again
' The forest sounds; the surf upon the shore;
' The dolphin's mood, uncertain where to play;
' The sea-mew on the land; the heron used
' To wade among the shallows, borne aloft
' And soaring on his wings-all these alarm;
' The raven, too, who plunged his head in spray,
' As if to anticipate the coming rain,
And trod the margin with unsteady gait.
But if the cause demands, behold me thine.