The belief "it can't be done" harbors the potential drawing.

(You must) unbutton the straight-jacket of the intellect, and free the hand to begin the ceremony which will envelop the whole self, and not the mind alone.

Today we have a greater fund of knowledge. We do not shudder before the old master's drawings. We use them as reference material to enrich our own ideas of beauty.

...Do not lose...that part of you, which is a child
(the curious quest for discovery in a world of wonder.)