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By far the most dangerous foe we have to fight is apathy-indifference from whatever cause, not from a lack of knowledge, but from carelessness, from absorption in other pursuits, from a contempt bred of self satisfaction.

Sir William Osler (2001). “Osler's "a Way of Life" and Other Addresses, with Commentary and Annotations”, p.369, Duke University Press
By far the most dangerous foe we have to fight is apathy-indifference from whatever cause, not from a lack of knowledge, but from carelessness, from absorption in other pursuits, from a contempt bred of self