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A boy, by the age of 3 years, senses that his destiny is to be a man, so he watches his father particularly-his interests, manner, speech, pleasures, his attitude toward work.

Benjamin Spock (1992). “Dr. Spock's Baby and Child Care”
A boy, by the age of 3 years, senses that his destiny is to be a man, so he watches his father particularly-his interests, manner, speech, pleasures, his attitude toward work.