At the outset of your present study comprehend that salesmanship is not
a _science_. Rather, it is an _art_. Like every other art, however, it
has a _related_ science. Selling is a _process. Knowledge about the
principles and methods_ that make the process most effective is the
related _science_. But such knowledge supplies only the best foundation
for building success by the _actual practice_ of most effective
salesmanship. The master salesman practices the scientific principles
and methods he has learned until the _skillful use_ of his knowledge in
every-day selling becomes _second nature_ to him. Thus, and thus only,
is his _art_ perfected.

You will gain _knowledge_ from these books about _how_ to sell with
assurance the true idea of your best capabilities--about _how_ to sell
any "goods of sale" unfailingly. But you can develop the _skill_
necessary to the _actual achievement_ of certain success only if you
_continually use_ what you learn about the selling process. You must
perfect your selling _art_ by the intelligent employment of every _word_
and _tone_ and _act_ of your life to attract other men to you, and to
impress on them convincingly true ideas of your particular ability.

[Sidenote: Be a Salesman Every Minute]

The master professional salesman is "always on the job" with his three
means of self-expression, to get across to prospects true ideas of the
desirability and value of his goods. He is a salesman _every minute_,
and in _everything_ he does or says. You can become as efficient as he,
in selling ideas about _your_ "goods of sale," if your proficiency
becomes as _easy and natural_ as his. Such ease is the _sure_ result of
sufficient right practice.