A certain amount of care or pain or trouble is necessary for every man at all times. A ship without a ballast is unstable and will not go straight.——[Germany] Arthur Schopenhauer
一定的憂愁、痛苦或煩惱,對每個人都是時時必需的。就像一艘船如果沒有壓艙物,便不會穩(wěn)定,不能朝著目的地一直前進?!猍德國]亞瑟·叔本華