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— Howard A. Tullman"Ability is the result of mental and physical toughness, resourcefulness, and powerful concentration."
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Many of us have a mental conception of what a Christian should be, and the lives of the saints become a hindrance to our concentration on God.
— Oswald Chambers
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Let each hour of the day have its allotted duty, and cultivate that power of concentration which grows with its exercise.
— William Osler
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