To frighten others is to alter the way their brain is functioning in that moment and alter their biology. The prefrontal cortex is hindered, stress hormones and adrenaline are raised. They are, in that moment, more vulnerable to harm and coerced control. Thus, the noble, the good of heart, make sure that when they talk they reduce fear, that they take actions that neutralise fright and restore proper healthy functioning.
Frightened people are denied the chance for personal growth because the parts of the brain that can achieve this are switched off by fear.
Because the frightened are vulnerable, because in the moment of fear their logic, self control and empathy centres are temporarily offline, the stoic hearted have a duty to act in chivalrous ways.