Freud's life instinct. The aim of this
instinct according to Freud is "to establish ever greater unities and to preserve them thus--in short, to bind together." It is the instinct to
live, to
grow, to
create, to
learn. It is the counter part of
Thanatos, the death instinct.
To Eros belongs libido, the life energy that generates sexuality. Eros is the life instinct and to spread life, to procreate, we need to have sex, thus Libido.