I went to the Agnes Martin exhibition on Sunday at Tate Modern, which was really enjoyable. I thought her work was serene and beautiful. I may write about my experience at a later date, but anyway here's one of her quotes that appeals to me because of its positive slant.
The adventurous state of mind is a high house... The joy of adventure is unaccountable. This is the attractiveness of artwork. It is adventurous, strenuous and joyful.