Input (grade 12): Freud believed that people are driven by two conflicting central desires: the life drive (libido or Eros) (survival, propagation, hunger, thirst, and sex) and the death drive.
Output (grade 11): Freud believed that humans were driven by two conflicting central desires: the life drive (survival, propagation, hunger, thirst, and sex) and the death drive (Thanatos).