I am sorry for writing you such a long letter, I didnt have time to write a short one -Pascal
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All progress depends on the unreasonable man, for the reasonable man accepts things as they are and adapts himself to them - George Bernard Shaw
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When your teachers or your parents tell you 'Concentrate, concentrate. Whatever you are doing you MUST CONCENTRATE' they have got it almost precisely the wrong way round. Your aim in life should be to be to maximise the number of things you can do without thinking about them at all; then you can concentrate your mind on learning new things - Alfred North Whitehead
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It is the mark of an educated mind to rest satisfied with the degree of precision that the nature of the subject admits & not to seek exactness when only an approximation is possible - Aristotle