are substances used as coloring.
Pencils
Pigments
Charcoal
Stain

giovanni battista pergolesi, italian baroque composer who wrote one of the most famous settings of the stabat mater. don lorenzo perosi, catholic priest and director of the sistine choir under five popes.

the above mentioned statements talks about the creativity of an artist and to what extend they can utilize and experiment on the objects provided.   differing size and subjects are given so that an image of wisdom is created. displaying a transition from light to dark in something by darkening sections in order to create a shadow. and lastly, putting bits and pieces together to formulate a new image.