He adds: “Teaching requires a vast range of knowledge, ability, skill, judgment, and understanding ​ — and it requires a thoughtful, caring person at its center. ” ​ — To Teach — ​ The Journey of a Teacher.
Ia menambahkan, ” Mengajar menuntut pengetahuan yang luas dan kesanggupan, keterampilan, daya pengamatan, serta pemahaman yang tinggi ​ — dan, yang terpenting, menuntut orang yang penuh perhatian. ” ​ — To Teach ​ — The Journey of a Teacher.