"It is what we know already that often prevents us from learning."
"Ardent desire for knowledge, in fact, is the one motive attracting and supporting investigators in their efforts; and just this knowledge, really grasped and yet always flying before them, becomes at once their sole torment and their sole happiness. Those who do not know the torment of the unknown cannot have the joy of discovery which is certainly the liveliest that the mind of man can ever feel."
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Source: Claude Bernard (2012). “An Introduction to the Study of Experimental Medicine”, p.239, Courier Corporation
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