What a gem of a teacher! A legend. I did not learn C of calculus in 5 years of my engineering studies way back in 1974-79. Then came the blessing in disguise and by the way I had to teach some calculus to my daughter in her graduate course in economics. And that is how I landed onto Professor Gilbert Strang's video and I fell in love with calculus which all these years was kind of a terror to me. What a beautiful and stylish way of teaching mathematics. I never have seen any teacher with such a vast knowledge and at the same time  comfortable teaching beginners. God bless Professor Strang with health a d happiness.RegardsAnup Kumar GuptaIndia####[]