You let the brush take over and in a way follow its own head, and in the brush doing what it's doing, it will stumble on what one couldn't by oneself… - Robert Motherwell

One cuts and chooses and shifts and pastes, and sometimes tears off and begins again.

Here we are at the antipode of automatism [invention from Surrealism] and mechanism, and no less distant from the cunning way of reason. In the action of the machine, in which everything is repeated and predetermined, accident is an abrupt negation.. .. [the] excess of ink flowing capriciously in thin black rivulets.. ..this line deflected by a sudden jar, this drop of water diluting a contour – all these are the sudden invasion of the unexpected in a world where it has a right to its proper place. [Motherwell is quoting here the comments of w:Henri Focillon on Japanese legends of 'accidentalism']

The emergence of abstract art is a sign that there are still men of feeling in the world. Men who know how to respect and follow their inner feelings, no matter how irrational or absurd they may first appear. From their perspective, it is the social world that tends to appear irrational and absurd.