The most enlightening Calculus books

<i>Calculus</i> is, hands down, the best textbook I have ever bought.

iirc, feynman mentions the name of a calculus book that he used for learning calculus at a tender age. does anyone know which one it is ? thanks !

here here! Rudin's books are the next step after having had some exposure to the books listed in the above link

bumping because I agree with this good list of calculus books.