happiness is a state of mind but is not a state

happiness is a state of mind but is not a state Happiness is a state of mind. 求翻译：youth is not a time of life ,but a state of mind. Youth is not a time of life;it is a state of mind;it is not Youth is not a time of life ,it is a state of mind,it is not youth is not a time of life but a state of mind就此材料发表你的看法和观点 youth is not a time of life but a State of mind.这是一句名言,怎么理解它 谁有youth is not a time of life,but a state of mind.这首诗的全文? 英语翻译Youth is not a time of life; it is a state of mind;it is Youth is not a time of life; it is a state of mind; it is no 英语翻译Youth is not a time of life; it is a state of mind; it i Youth is not a time of life; it is a state of mind.（英语语法请教）