Temperament is more important in the world than truth. It is what is individual and alive in a man and it subordinates reality.
Temperament is, in children, inclusive of such things as soothability, smiling, shyness, frustration/distress in response to novelty, high-and low-intensity pleasure, attention focusing and shifting, perceptual sensitivity, activity level.
Temperament is constitutionally based individual differences in reactivity and self-regulation, explicitly including motivation and emotion.
Temperament is that which lies behind mood whereas the fate of character is what lies behind will. Behind both lies the influence of family the tyranny of culture... and finally the power of climate and environment. Freedom is achieved to the extent that one rises above these.