Courage (n.) is an inner resolution to go forward despite obstacles while cowardice is submissive surrender to circumstances.
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Courage (n.) is never losing the zest for living even though their life situation is zestless while cowardliness is becoming overwhelmed by the uncertainties of life.
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Courage (n.) masters fears by facing them while cowardice represses fear and is thereby mastered by it.
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Courage (n.) is a dyke we must constantly build to hold back the flood of fear.
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Courage (n.) is the power of the mind to overcome fear.