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Given two people with exactly the same ability, the one person who manages day in and day out to get in one more hour of thinking will be tremendously more productive over a lifetime.

"'You and Your Research' - 1986 Speech by Dr. Richard W. Hamming". www.valueinvestingworld.com. September 21, 2009.
Given two people with exactly the same ability, the one person who manages day in and day out to get in one more hour of thinking will be tremendously more productive over a lifetime.