不要因渴望没有得到而错过已经拥有的；要知道，现在已经拥有的，也曾是你渴望得到的。——伊壁鸠鲁（古希腊哲学家）

Do not spoil what you have by desiring what you have not; remember that what you now have was once among the things you only hoped for. ——Epicurus