The lines above are from a book written by Mark Ryan titled Calculus Essentials for Dummies. I should quote a para from the Introduction section of the book …
The mere thought of having to take a required calculus course is enough to make legions of students break out in a cold sweat. Others who have no intention of ever studying the subject have this notion that calculus is impossibly difficult unless you happen to be a direct descendant of Einstein
Its time for me to start with calculus and the first paragraph of the book makes me sure that I would master the subject 🙂