“When we speak of nature it is wrong to forget that we ourselves are part of Nature. We ought to view ourselves with the same curiosity and openness with which we study a tree, the sky or a thought, because we too are linked to the entire universe.”
In his old age Matisse used charcoal on the ends of long poles to draw with. He also used coloured paper to make pictures, cutting shapes with large scissors even when he was bed-ridden.
Have a look at this brilliant TED talk.