Keramos is the Greek word meaning pottery, potter's clay, or a potter. Longfellow's extended poem by this title can be seen in full on the web; for this piece, the composer extracted part of the poem as follows: 
Tum, tum, my wheel! Tum round and round 
Without a pause, without a sound:  
So spins the flying world away!  
This clay, well mixed with marl and sand,  
Follows the motion of my hand;  
Far some must follow, and some command,  
Though all are made of clay!   
Tum, tum, my wheel! All things must change  
To something new, to something strange;  
Nothing that is can pause or stay;  
The moon will wax, the moon will wane,  
The mist and cloud will tum to rain,  
The rain to mist and cloud again,  
To-morrow be to-day.   
Tum, tum, my wheel! All life is brief;  
What now is bud wilt soon be leaf,  
What now is leaf will soon decay;  
The wind blows east, the wind blows west; 
 
The blue eyes in the robin's nest  
Will soon have wings and beak and breast, 
 
And flutter and fly away.   
Tum, tum, my wheel! 'Tis nature's plan  
The child should grow into the man,  
The man grow wrinkled, old, and gray;  
In youth the heart exults and sings,  
The pulses leap, the feet have wings;  
In age the cricket chirps, and brings  
The harvest home of day.   
Stop, stop, my wheel! Too soon, too soon  
The noon will be the afternoon,  
Too soon to-day be yesterday;  
All that inhabit this great earth,  
Whatever be their rank or worth,  
Are kindred and allied by birth, 
And made of the same clay.  
                                
                  
                Henry Wadsworth Longfellow 
American, 1807-1882