John Donne addresses his poem “The Sun Rising” to the sun, but the theme of the poem is the joy of true love. The poet derives infinite joy by loving and by being loved. The poet’s wit and irony are here directed against the sun for trying to interfere in the lover’s happiness.
In the opening stanza, the sun is addressed as “busy, old fool” flashing
 his light into the lover’s bedroom, perhaps with the intention of 
waking up and parting them.  It is unfair on his part to expect the 
lovers to act according to his movements.  He may go about his trivial 
errands like pulling up ‘late school boys’ and lazy apprentices who hate
 to work.  The country ants and courtiers may knuckle under his 
authority but not so the lovers.  Love is above time, which is regulated
 by the sun.  For lovers, seasons, hours and days have no meaning.
The argument against the sun is continued.  The sun need not think that 
his light is dazzling and worthy of respect.  If the poet closes his 
eyes, the sunlight is rendered dark.  But he does not like to lose sight
 of his beloved by closing his eyes.  In hyperbolic language he asks the
 sun if the eyes of his beloved are not brighter than sunlight.  Gazing 
into her eyes, the sun may feel dazzled.  Roaming over the whole world, 
the sun can inform him on the next day whether the lady is not worth 
more than the East and the West Indies.  The poet’s lady comprises in 
her all the kingdoms.  The poet, in the possession of his mistress is 
thus richer than any king on earth.
The lovers in Donne’s poem are the archetypal ideas or the soul of the 
world, of which the states and princes are imperfect perfections.  The 
poet declares that there is nothing else besides him and his beloved 
which implies that they have become one, and together they constitute 
the soul of the world.  The lovers can look down upon the world from the
 heights of perfection they have reached through the realization of 
their true love.  The pomp and majesty of a king is then a mere 
imitation of the glory attained by lovers.  Compared to their spiritual 
wealth, all material wealth seems counterfeit.  The sun, being old and 
run down, will welcome the contraction of the world.  Now that the 
lovers are the world, the can fulfill his duty of lighting and warming 
the world by merely shining on them.  By circling round a single room, 
he can circle round the whole world.
The tone of the poem is gently ironic besides being playful and 
colloquial.  Love is shown as having triumphed over time and space.  The
 poet’s sense of completeness in the possession of his mistress is an 
illusion.  The lovers mock at space and time as illusions without 
realizing that they themselves are under an illusion.  Those who accept 
the reality of time and space may be poor deluded mortals, but the 
lovers who pride themselves I having achieved a sense of completeness 
are by no means better.  Professor A.  Stein points out, “What the 
lovers represent majestically is not a distillation of all that is 
precious and delightful on earth to the imagination of a lover, who does
 not feel himself quite on earth….  The lovers possess in their bed what
 does not seem to incommode them as idea and image, a composite token of
 the material possession of that gross external world.”
The lovers look out on other illusions from an unexamined illusion.  The
 poet, with his beloved by his side, feels infinite bliss, which to him 
appears perfect.  He tries to force on us the conviction that the kings 
and their kingdoms are all with the lovers.  The lady comprises in her 
all the kingdoms, and the poet comprises in him all the kings.  A king 
with all his indisputable power and majesty can only imitate the bliss 
of the lovers.  Even the sun is presented as being glad to move round 
the lovers who represent the whole world.  The sun’s duty of giving 
light and warmth to the world is thus lightened.
All told, one is left wondering if Donne is not mocking at himself and 
his lady, living in an illusory world of unadulterated joy.  Donne is 
here mocking at the conventional conceits found in the love poems of his
 time, or he imply that the lovers represent the soul of the world or 
the Platonic archetype of the world.