“Contemporary moral philosophy at its best. Thomson’s ground plan shows what conditions must be met by any adequate ethical theory. Her arguments are cogent, concise, and uncluttered by literary flourishes.”–Mary Mothersill, Columbia University”The main value of these lectures lies in the way Thomson develops moral theory beyond her earlier publications. Her style has always been quite distinctive, and I find it a pleasure to read.”–Gilbert Harman, author of “Thought”