1996 Steele Prize Winner for Mathematical Exposition
" Intersection Theory...
introduced a new order into a field that had been in disarray, by introducing a new and simpler approach that gave all the old results and more. Moreover it gave clarifying expositions of many classical computations in intersection theory, often reducing lengthy old arguments to a few lucid paragraphs. By its very clear exposition and the high quality of its content, this book has had an enormous impact on the field. "
- Citation for the Steele Prize for Mathematical Exposition August 1996