at first, we have to double de-clutch and obtain the right engine
speed for a noiseless "change," yet, after a time, the whole action
is performed sub-consciously. It is the same with pianoforte playing.
Many players, some better than others, can play the most difficult
classical music without _consciously_ recalling it to mind. As soon
as they _try to remember_ the whole "piece" leaves them, but as long
as they leave the whole matter to the sub-conscious (which never
forgets) they can keep on playing. I and my conscious mind are not
doing much of the actual writing of this book. We think the thoughts
and have something to do with the formation of the sentences, but
the sub-conscious mind writes them down. If I had to think of each
word and letter, my task would be hopeless, and I should become half
dead with fatigue.

The sub-conscious mind, however, is even more helpful, for it does
the bulk of our thinking, and can be taught to do a great deal more.
If we had to think everything out laboriously, according to the laws
of logic, life would be unbearable. Instead of this our sub-conscious
mind does the bulk or our thinking, and, if we give it a chance, will
do it in an extremely accurate manner, strictly according to the laws
of logic and _without the slightest fatigue_. The more that we train
the sub-conscious to do our ordinary thinking for us, the less we
suffer from fatigue. Fatigue is unknown to the sub-conscious mind,
therefore we can never tire it or overwork it.

The sub-conscious mind can be made to do more and more work for us
if we will delegate definite work for it to deal with. One who has
learnt thought control, who can take up a matter, consider it in all
its bearings, and then dismiss the subject from his conscious thought,
is able to increase his efficiency a hundred per cent., and reduce
his mental fatigue almost to vanishing point. Instead of laboriously
working out his problems and worrying and scheming over them, he
simply dismisses them to his sub-conscious mind to be dealt with by
a master mind which works unceasingly, with great rapidity, extreme