O...M...G.
I bought this from Half Price Books in 2006 or 2007 because I'm a math geek, and I thought it would be fun to own and work through a calculus book from the 1960s. But then I kept putting it off. And off. ...Aaand off.
So last year, I decided "I WILL DEFINITELY READ THAT MATH BOOK NEXT YEAR." So the beginning of 2015, the first book allowed off my bookshelf was this. This has been my read-in-the-morning and read-at-night book for a month and a half. There was a lot more remembering/re-teaching calculus and differential equations than I thought there was going to be. But I finally finished! And I'm proud of myself for remembering/re-teaching/re-learning calculus and DiffEq from my college days. But I won't kid myself: I know that I'll have re-forgotten everything in the next few months, if not weeks or days.
Ross' ways of explaining and illustrating problems were sometimes a little weird, but I thought it was kind of charming (and yet aggravating sometimes, too) the way he'd say "We'll leave this to the reader to prove..." or "The explanation for the proof is beyond the scope of this book." No, no, no... I need *you* to show me how to prove this. Don't leave it up to me!