Text ( visual ) : unmediated The principle of unrest : activist philosophy in the expanded field / Brian Massumi. -- : print. -- London : Open Humanities Press , 2017. -- 147 p. ; 23 cm. -- (Immediations). -- Includes bibliographical references. -- ISBN 9781785420443 ; (BB25225806) ; https://ci.nii.ac.jp/ncid/BB25225806 Author Heading(s): Massumi, Brian