The whole book is presented as a relatively free-flowing
dialogue between the AUTHOR and the READER. From one discussion
to another the AUTHOR will lead the inquisitive and receptive
READER to different notions, ideas, and theorems of calculus,
emphasizing especially complicated or delicate aspects, stressing the
inner logic of proofs, and attracting the reader's attention to special
points. I hope that this form of presentation will help a reader of the
book in learning new definitions such as those of derivative, antiderivative, definite. integral, differential equation, etc. I also expect that
it will lead the reader to better understanding of such concepts as
numerical sequence, limit of sequence, and function. Briefly, these
discussions are intended to assist pupils entering a novel world of
calculus. And if in the long run the reader of the book gets a feeling
of the intrinsic beauty and integrity of higher mathematics or even
is appealed to it, the author will consider his mission as successfully
completed.