It requires a very unusual mind to undertake the analysis of the obvious.
By relieving the brain of all unnecessary work, a good notation sets it free to concentrate on more advanced problems, and in effect increases the mental power of the race.
There is a technique, a knack, for thinking, just as there is for doing other things. You are not wholly at the mercy of your thoughts, any more than they are you. They are a machine you can learn to operate.
Learning preserves the errors of the past as well as its wisdom.
In order to acquire learning, we must first shake ourselves free of it.
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