Life force. I would have lots of that, of course." She did not blush, but Kit did. "Life force" was a pitifully inadequate term indeed for that which… - E.E. "Doc" Smith

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Life force. I would have lots of that, of course." She did not blush, but Kit did. "Life force" was a pitifully inadequate term indeed for that which Civilization's only Lensman–mother had in such measure, but they both knew what it was.