cf. Video by Bassman5420 via Pixabay (edited and modified by me)
When divine Art conceives a form and face,
She bids the craftsman for his first essay
To shape a simple model in mere clay:
This is the earliest birth of Art’s embrace.
From the live marble in the second place
His mallet brings into the light of day
A thing so beautiful that who can say
When time shall conquer that immortal grace?
Thus my own model I was born to be–
The model of that nobler self, whereto
Schooled by your pity, lady, I shall grow.
Each overplus and each deficiency
You will make good. What penance then is due
For my fierce heat, chastened and taught by you?
— Michelangelo, The Model And The Statue