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Man has been called a rational being, but rationality is a matter of choice-and the alternative his nature offers him is: rational being or suicidal animal. Man has to be man-by choice; he has to hold his life as a value-by choice; he has to learn to sustain it-by choice; he has to discover the values it requires and practice his virtues-by choice. A code of values accepted by choice is a code of morality.
