Immature love says: 'I love you because I need you.' Mature love says 'I need you because I love you.'
Creativity requires the courage to let go of certainties.
The mother-child relationship is paradoxical and, in a sense, tragic. It requires the most intense love on the mother's side, yet this very love must help the child grow away from the mother, and to become fully independent.
The psychic task which a person can and must set for himself is not to feel secure, but to be able to tolerate insecurity.
Man is the only animal for whom his own existence is a problem which he has to solve.