This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...hite nor black, but gray,” is not a moral judgment, but an escape from the responsibility of moral judgment.
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To judge means: to evaluate a given concrete by reference to an abstr
act principle or standard. It is not an easy task; it is not a task that can be performed automatically by one’s feelings, “instincts” or hunches. It is a task that requires the most preci
se, the most exacting, the most ruthlessly objective and rational process of thought. It is fairly easy to grasp abstract moral principles; it can be very difficult to apply them to a given situ...