He's the kind of diffident youth who would have to be VERY sure before he ventured an opinion at all." A half smile came to the other's lips.
He is diffident because of his excellent upbringing.
mnli hypothesis: He is diffident because of his excellent upbringing. premise: He's the kind of diffident youth who would have to be VERY sure before he ventured an opinion at all." A half smile came to the other's lips.