followed by constructive action. Young people should expend their
energies in physical culture and games. Older people should interest
themselves in hobbies and intellectual pursuits. It is only advanced
students who can control their thoughts so that they can govern their
life forces by mental means. Those less advanced, when attacked by
evil or weak thoughts, must get up and _do_ something quite different,
and thus get their minds off the forbidden subject and interested
in the new object of attention. It is a case of directing the desires
and life forces into different channels, by controlling the thoughts
and attention. Here is seen the value of true religion, for it brings
fresh ideals into the life and directs the attention to higher and
better things. The writer realizes that a change must take place in
the heart of the individual before he can desire these better things.
When, however, this change has taken place, the battle has only just
begun, for each one has to work out his own salvation.

At first, then, most people will find it necessary to do something
in order to attract their attention and guide their thoughts to
something quite different from the forbidden subject. Later on,
however, when they become more advanced in the science of right
thinking, they will be able to direct their thoughts into any desired
direction. This necessitates constant vigilance. Each thought has
to be carefully scrutinized before being allowed to pass the threshold
of the mind. By reversing every negative or unworthy or ignoble
thought into its opposite, a change is wrought in the brain and
nervous system. The cells formerly used for wrong thinking and for
the production of wrong action go out of use as new cells are brought
into use for the production of right action.

This stage leads to one higher still, when it becomes a settled habit
to reverse bad thoughts into good ones and perform right actions
instead of bad or weak ones. The power of the sub-conscious mind,
which at one time seemed so evil, produces right action more or less
automatically. When once the habit of cleaning the teeth is