Imperfect preparation gives rise to the thousand-fold forms that express physical and mental inferiority and insecurity.

The feeling of inferiority rules the mental life and can be clearly recognized in the sense of incompleteness and un-fulfillment, and in the uninterrupted struggle both of individuals and humanity.

Behind everyone who behaves as if he were superior to others, we can suspect a feeling of inferiority which calls for very special efforts of concealment. It is as if a man feared that he was too small and walked on his toes to make himself seem tall

We must interpret a bad temper as a sign of inferiority

Exaggerated sensitiveness is an expression of the feeling of inferiority

The greater the feeling of inferiority that has been experienced, the more powerful is the urge to conquest and the more violent the emotional agitation.