"The old happiness is unreturning. Boy's griefs are not so grievous as youth's yearning. Boys have no sadness sadder than our hope."

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The expectation that every neurotic phenomenon can be cured may, I suspect, be derived from the layman's belief that the neuroses are something quite unnecessary which have no right whatever to exist. Whereas in fact they are severe, constitutionally fixed illnesses, which rarely restrict themselves to only a few attacks but persist as a rule over long periods throughout life.

— Sigmund Freud