as These Two Men Find Truer, Deeper Friendship Through An Exchange Of Letters On Math, You May Be Surprised To Find Yourself, As I Was, Moved By Powerful Emotions. I Never Thought I'd Get Choked Up By An Equation--but These Guys Are Plotting Out The Hardest Kind Of Change To Track: The Movement From Me To Us.--alan Aldathe Calculus Of Friendship Is An Intriguing Journey That Casts Mathematics In A Most Unusual Light. Through Thirty Years Of Correspondence Between Student And Teacher, We Enter A Private World Where The Rigors Of Logic Are The Last Defense Against The Vagaries Of Life.--brian Greene, Author Of the Elegant Universein This Delightfully Inspired Account Of A Thirty-year Correspondence, Two Mathematicians Discover Even Deeper Things Than Theorems That Are Fundamental. A Math Book For The Mind And For The Heart.--larry Zimmerman, Winner Of The 1986 Presidential Award For Excellence In Mathematics Teachingsteven Strogatz Has Written An Unpretentious, Charming, Original, And Inspiring Book. In A Disarmingly Personal Depiction, Strogatz Leads Us Through A Story Of Friendship Between Understated Mentor And Virtuosic Student. The Mathematical Excursions Are As Much A Pleasure To Read As The Moving Narrative Of The Unusual Friendship That The Mathematics Inspires.--janna Levin, Author Of a Madman Dreams Of Turing Machinesit Is Unusual For Mathematicians To Write In Such Personal Terms And With Such Candor. Readers With Any Mathematical Background Will Find This Book Intriguing And Fascinating.--john Adam, Coauthor Of guesstimationthe Gentle But Unremittingly Honest Account Of This Friendship Utterly Absorbed Me. Also, Some Of The Calculus Is Hilarious.--john Cleesecontaining Many Mathematical Morsels, This Decades-long Correspondence Tells The Story Of A Very Special Student-teacher Relationship. These Men Have Taught Each Other More Than They Could Ever Have Envisioned.--adrian Banner, Author Of the Calculus Lifesavermathematics Speaks To The Transcendental, As Does This Extraordinary Friendship. A Beautiful Book!--james Tanton, Founding Director Of The St. Mark's Institute Of Mathematicsthis Is A Lovely Book. Strogatz Succeeds In Producing A Sincere Tribute To Teachers, And He Emphasizes In A Direct Way The Human Element Of Mathematics.--barry Cipra, Author Of misteaks...and How To Find Them Before The Teacher Does: A Calculus Supplement mathematics Teacher this Story Will Draw In Both The Novice And The Veteran. Teachers Of Mathematics Will Appreciate The Long-term Effect Their Teaching Can Have On Students. The Included Mathematics Can Be Related To Both High School And Undergraduate Calculus Sequences To Demonstrate Some Interesting, Thought-provoking, And 'big Picture' Connections To These Courses.