Pure drawing is an abstraction. Drawing and colour are not distinct, everything in nature is coloured.
Drawing is rather like playing chess: your mind races ahead of the moves that you eventually make.
Drawing is like making an expressive gesture with the advantage of permanence.
When I see a white piece of paper, I feel I've got to draw. And drawing, for me, is the beginning of everything.
If I try to articulate every little detail in a drawing, it would be like missing the forest for the trees, so it's just about getting the outline of the forest.