On the wall above the table, a white paper in a black frame contains the following remarks:

“This is the work of art which, together with the needle and thread, constitutes the material of the instrument of labour. The operation of making, breaking up, and putting together an instrument of labour is its direct activity or function. No other material can thus be so called, except in so far as it has been specifically prepared and dealt with as an instrument of labour. Its immediate activity, whether preparing or performing, is alone that which can give rise to any form of artistic effect. ”