“The oppressor is solidary wit the oppressed only when he stops regarding the oppressed as an abstract category and sees them as persons who have been unjustly dealt with, deprived of their voice, cheated in the sale of their labor -- when he stops making pious, sentimental, and individualistic gestures and risks an act of love. True solidarity is found only in the plenitude of this act of love, in its existentiality, in its praxis. To affirm that men and women are persons and as persons should be free, and yet to do nothing tangible to make this affirmation a reality, is a farce.”