Astrogation and military history he absorbed like water; abstract mathematics was more difficult, but whenever he was given a problem that involved patterns in space and time, he found that his intuition was more reliable than his calculation. he often saw at once a solution that he could only prove after minutes or hours of manipulating numbers.
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The were perfect partners—one highly intuitive and the other highly analytical.
During [these] periods of relaxation after concentrated intellectual activity, the intuitive mind seems to take over and can produce the sudden clarifying insights which give so much joy and delight.