Spheres and their Movements

When we read Chaucer we are transported into a world in which the heavenly bodies and their movements seem to bear a more intimate relation to human life than they do in the world in which we live. The thought of the revolving spheres carrying sun, moon, and planets, regulating light and heat on the earth, and exercising a mysterious influence over terrestrial events and human destiny was a sublime conception and one that naturally appealed to the imagination of a poet. Chaucer was impressed alike by the vastness of the revolving spheres in comparison to the earth’s smallness, by their orderly arrangement, and by the unceasing regularity of their appearance which seemed to show that they should eternally abide. In the Parlement of Foules he interpolates a passage from Cicero’s Somnium Scipionis in which Africanus appears to the sleeping Scipio, points out to him the insignificance of our little earth when compared with the vastness of the heavens and then admonishes him to regard the things of this world as of little importance when compared with the joys of the heavenly life to come.[9]

“Than shewed he him the litel erthe, that heer is,
At regard of the hevenes quantite;
And after shewed he him the nyne speres.”

The regular arrangement of the planetary spheres clings often to the poet’s fancy and he makes many allusions to their order in the heavens. He speaks of Mars as “the thridde hevenes lord above”[10] and of Venus as presiding over the “fifte cercle.”[11] In Troilus and Criseyde the poet invokes Venus as the adorning light of the third heaven.[12]

“O blisful light, of which the bemes clere
Adorneth al the thridde hevene faire!”[13]

Mediaeval astronomers as we have seen, imagined nine spheres, each of the seven innermost carrying with it one of the planets in the order mentioned below; the eighth sphere was that of the fixed stars, and to account for the precession of the equinoxes, men supposed it to have a slow motion from west to east, round the axis of the zodiac; the ninth or outermost sphere they called the primum mobile, or the sphere of first motion, and supposed it to revolve daily from east to west, carrying all the other spheres with it. The thought of the two outer spheres, the primum mobile, whirling along with it all the inner spheres, and the firmament, bearing hosts of bright stars, seems to have appealed strongly to the poet’s imagination. In the Tale of the Man of Lawe the primum mobile is described as crowding and hurling in diurnal revolution from east to west all the spheres that would naturally follow the slow course of the zodiac from west to east.[14] Elsewhere the primum mobile is called the “whele that bereth the sterres” and is said to turn the heavens with a “ravisshing sweigh:”

“O thou maker of the whele that bereth the sterres, which that art y-fastned to thy perdurable chayer, and tornest the hevene with a ravisshing sweigh, and constreinest the sterres to suffren thy lawe;”[15]

The firmament, which in Chaucer is not restricted to the eighth sphere but generally refers to the whole expanse of the heavens, is many times mentioned by Chaucer; and its appearance on clear or cloudy nights, its changing aspects before an impending storm or with the coming of dawn, beautifully described.[16]

2. The Harmony of the Spheres

Some of the cosmological ideas reflected in Chaucer’s writings can be traced back to systems older than the Ptolemaic. The beautiful fancy that the universe is governed by harmony had its origin in the philosophy of the Pythagoreans in the fourth century B. C., and continued to appeal to men’s imagination until the end of the Middle Ages. It was thought that the distances of the planetary spheres from one another correspond to the intervals of a musical scale and that each sphere as it revolves sounds one note of the scale. When asked why men could not hear the celestial harmony, the Pythagoreans said: A blacksmith is deaf to the continuous, regular beat of the hammers in his shop; so we are deaf to the music which the spheres have been sending forth from eternity.

In ancient and mediaeval cosmology it was only the seven spheres of the planets that were generally supposed to participate in this celestial music; but the poets have taken liberties with this idea and have given it to us in forms suiting their own fancies. Milton bids all the celestial spheres join in the heavenly melody:

“Ring out, ye crystal spheres,
Once bless our human ears,
If ye have power to touch our senses so;
And let your silver chime
Move in melodious time,
And let the base of heaven’s deep organ blow;
And with your ninefold harmony,
Make up full consort to the angelic symphony.”[17]

Shakespeare lets every orb of the heavens send forth its note as it moves:

“There’s not the smallest orb which thou behold’st
But in his motion like an angel sings,
Still quiring to the young-eyed cherubins;”[18]

Chaucer, too, makes all nine spheres participate:

“And after that the melodye herde he
That cometh of thilke speres thryes three,
That welle is of musyke and melodye
In this world heer, and cause of armonye.”[19]

Only in unusual circumstances can the music of the spheres be heard by mortal ears. In the lines just quoted the celestial melody is heard during a dream or vision. In Troilus and Criseyde, after Troilus’ death his spirit is borne aloft to heaven whence he beholds the celestial orbs and hears the melody sent forth as they revolve:

“And ther he saugh, with ful avysement,
The erratik sterres, herkeninge