The Little Black Book of Grisélidis Réal is the portrait of a true humanist who made a career out of compassion. Hailed as a virtuoso writer and a "revolutionary whore," Grisélidis Réal (1929–2005) chanced into prostitution at thirty-one after an upper-class upbringing in Switzerland. Serving clients from all walks of life, Réal applied the anarcho-Marxist dictum "from each according to his abilities, to each according to his needs" to her profession, charging sliding-scale fees determined by her client's incomes and complexity of their sexual tastes. Réal went on to become a militant champion of sexual freedom and prostitutes' rights. She has described prostitution as "an art, and a humanist science," noting that "the only authentic prostitution is that mastered by great technical artists...who practice this form of native craft with intelligence, respect, imagination, heart..."