Ignorance more frequently begets confidence than does knowledge: it is those who know little and not those who know much who so positively assert that this or that problem will never be solved by science.
There is one quality which one must possess to win and that is definiteness of purpose the knowledge of what one wants and a burning desire to possess it.
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The more extensive a man's knowledge of what has been done the greater will be his power of knowing what to do.
