d the other, the source and character of the
information.

The means may be considered analogous to the navigator's
instruments, and is no less a thing than the brain or mental
machinery; and the information is simply the world about us as
seen in the existing things, such as machinery, methods, popular
notions, textbooks, etc., all of which may be classed as
environments, and may be considered as analogous to the charts and
other publications of our worthy example.

Like the mariner, we must determine the degree of reliability of
all these sources of information and our means for interpreting
observed facts.

When we have ascertained this we will know what allowance to make
from the "observed" to get the actual facts. With this knowledge
we will be able to accurately determine both our starting-point
and best course.

The importance of considering our own minds will be seen when we
realize that every new fact taken in must in a measure conform to
the previous ideas. If some of these old ideas are erroneous, the
mind must be more or less ready to discard them. It is very
difficult to dislodge deep-seated convictions. Contradictory ideas
are not assimilated. Only one of them is actually accepted. Even
when to the objective reasoning they seem false, they frequently
continue to control our actions.

Since we are loaded with the popular ideas which we have absorbed
from our environment, it will be well for us to begin by
critically examining our environment and the process by which
ideas have been taken in. This may enable us to put out some of
the erroneous views, and perhaps more firmly fix the true ideas;
thereby preparing the mind for a more ready acceptance of what
otherwise would be barred out as contradictory.

We shall not go deeply into the psychology of the subject, as it
will not be necessary to go contrary to or beyond the well-known
facts.

We shall not try to locate the man or refer to him as the ego or
inner man. We shall simply say that we know that we can use our
brains to think on any subject, and we can use our senses to
collect information regarding any chosen subject.

Our senses and mental faculties can be directed to consider one
element in a business, and for the moment be unmindful of the many
other elements. In other words, we can to a certain extent manage
our mental processes. Just as a horse can be managed, so may we
manage our brains. A driver may carefully control the expenditure